diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index 6b53cd8..30f7646 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -5070,7 +5070,9 @@
 
             performConfigurationChangedForActivity(r, mCompatConfiguration, displayId,
                     true /* movedToDifferentDisplay */);
-            viewRoot.onMovedToDisplay(displayId);
+            if (viewRoot != null) {
+                viewRoot.onMovedToDisplay(displayId);
+            }
         } else {
             if (DEBUG_CONFIGURATION) Slog.v(TAG, "Handle activity config changed: "
                     + r.activityInfo.name + ", config=" + data.overrideConfig);
@@ -5078,7 +5080,9 @@
         }
         // Notify the ViewRootImpl instance about configuration changes. It may have initiated this
         // update to make sure that resources are updated before updating itself.
-        viewRoot.updateConfiguration();
+        if (viewRoot != null) {
+            viewRoot.updateConfiguration();
+        }
         mSomeActivitiesChanged = true;
     }
 
diff --git a/core/java/android/text/Emoji.java b/core/java/android/text/Emoji.java
index a07caf4..ee016c1 100644
--- a/core/java/android/text/Emoji.java
+++ b/core/java/android/text/Emoji.java
@@ -16,147 +16,14 @@
 
 package android.text;
 
-import java.util.Arrays;
+import android.icu.lang.UCharacter;
+import android.icu.lang.UProperty;
 
 /**
  * An utility class for Emoji.
  * @hide
  */
 public class Emoji {
-    // See http://www.unicode.org/Public/emoji/3.0/emoji-data.txt
-    // TODO: Generate from external/unicode/emoji-data.txt
-    private static int[] EMOJI_LIST = {
-        0x0023, 0x002A, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038,
-        0x0039, 0x00A9, 0x00AE, 0x203C, 0x2049, 0x2122, 0x2139, 0x2194, 0x2195, 0x2196, 0x2197,
-        0x2198, 0x2199, 0x21A9, 0x21AA, 0x231A, 0x231B, 0x2328, 0x23CF, 0x23E9, 0x23EA, 0x23EB,
-        0x23EC, 0x23ED, 0x23EE, 0x23EF, 0x23F0, 0x23F1, 0x23F2, 0x23F3, 0x23F8, 0x23F9, 0x23FA,
-        0x24C2, 0x25AA, 0x25AB, 0x25B6, 0x25C0, 0x25FB, 0x25FC, 0x25FD, 0x25FE, 0x2600, 0x2601,
-        0x2602, 0x2603, 0x2604, 0x260E, 0x2611, 0x2614, 0x2615, 0x2618, 0x261D, 0x2620, 0x2622,
-        0x2623, 0x2626, 0x262A, 0x262E, 0x262F, 0x2638, 0x2639, 0x263A, 0x2640, 0x2642, 0x2648,
-        0x2649, 0x264A, 0x264B, 0x264C, 0x264D, 0x264E, 0x264F, 0x2650, 0x2651, 0x2652, 0x2653,
-        0x2660, 0x2663, 0x2665, 0x2666, 0x2668, 0x267B, 0x267F, 0x2692, 0x2693, 0x2694, 0x2695,
-        0x2696, 0x2697, 0x2699, 0x269B, 0x269C, 0x26A0, 0x26A1, 0x26AA, 0x26AB, 0x26B0, 0x26B1,
-        0x26BD, 0x26BE, 0x26C4, 0x26C5, 0x26C8, 0x26CE, 0x26CF, 0x26D1, 0x26D3, 0x26D4, 0x26E9,
-        0x26EA, 0x26F0, 0x26F1, 0x26F2, 0x26F3, 0x26F4, 0x26F5, 0x26F7, 0x26F8, 0x26F9, 0x26FA,
-        0x26FD, 0x2702, 0x2705, 0x2708, 0x2709, 0x270A, 0x270B, 0x270C, 0x270D, 0x270F, 0x2712,
-        0x2714, 0x2716, 0x271D, 0x2721, 0x2728, 0x2733, 0x2734, 0x2744, 0x2747, 0x274C, 0x274E,
-        0x2753, 0x2754, 0x2755, 0x2757, 0x2763, 0x2764, 0x2795, 0x2796, 0x2797, 0x27A1, 0x27B0,
-        0x27BF, 0x2934, 0x2935, 0x2B05, 0x2B06, 0x2B07, 0x2B1B, 0x2B1C, 0x2B50, 0x2B55, 0x3030,
-        0x303D, 0x3297, 0x3299, 0x1F004, 0x1F0CF, 0x1F170, 0x1F171, 0x1F17E, 0x1F17F, 0x1F18E,
-        0x1F191, 0x1F192, 0x1F193, 0x1F194, 0x1F195, 0x1F196, 0x1F197, 0x1F198, 0x1F199, 0x1F19A,
-        0x1F1E6, 0x1F1E7, 0x1F1E8, 0x1F1E9, 0x1F1EA, 0x1F1EB, 0x1F1EC, 0x1F1ED, 0x1F1EE, 0x1F1EF,
-        0x1F1F0, 0x1F1F1, 0x1F1F2, 0x1F1F3, 0x1F1F4, 0x1F1F5, 0x1F1F6, 0x1F1F7, 0x1F1F8, 0x1F1F9,
-        0x1F1FA, 0x1F1FB, 0x1F1FC, 0x1F1FD, 0x1F1FE, 0x1F1FF, 0x1F201, 0x1F202, 0x1F21A, 0x1F22F,
-        0x1F232, 0x1F233, 0x1F234, 0x1F235, 0x1F236, 0x1F237, 0x1F238, 0x1F239, 0x1F23A, 0x1F250,
-        0x1F251, 0x1F300, 0x1F301, 0x1F302, 0x1F303, 0x1F304, 0x1F305, 0x1F306, 0x1F307, 0x1F308,
-        0x1F309, 0x1F30A, 0x1F30B, 0x1F30C, 0x1F30D, 0x1F30E, 0x1F30F, 0x1F310, 0x1F311, 0x1F312,
-        0x1F313, 0x1F314, 0x1F315, 0x1F316, 0x1F317, 0x1F318, 0x1F319, 0x1F31A, 0x1F31B, 0x1F31C,
-        0x1F31D, 0x1F31E, 0x1F31F, 0x1F320, 0x1F321, 0x1F324, 0x1F325, 0x1F326, 0x1F327, 0x1F328,
-        0x1F329, 0x1F32A, 0x1F32B, 0x1F32C, 0x1F32D, 0x1F32E, 0x1F32F, 0x1F330, 0x1F331, 0x1F332,
-        0x1F333, 0x1F334, 0x1F335, 0x1F336, 0x1F337, 0x1F338, 0x1F339, 0x1F33A, 0x1F33B, 0x1F33C,
-        0x1F33D, 0x1F33E, 0x1F33F, 0x1F340, 0x1F341, 0x1F342, 0x1F343, 0x1F344, 0x1F345, 0x1F346,
-        0x1F347, 0x1F348, 0x1F349, 0x1F34A, 0x1F34B, 0x1F34C, 0x1F34D, 0x1F34E, 0x1F34F, 0x1F350,
-        0x1F351, 0x1F352, 0x1F353, 0x1F354, 0x1F355, 0x1F356, 0x1F357, 0x1F358, 0x1F359, 0x1F35A,
-        0x1F35B, 0x1F35C, 0x1F35D, 0x1F35E, 0x1F35F, 0x1F360, 0x1F361, 0x1F362, 0x1F363, 0x1F364,
-        0x1F365, 0x1F366, 0x1F367, 0x1F368, 0x1F369, 0x1F36A, 0x1F36B, 0x1F36C, 0x1F36D, 0x1F36E,
-        0x1F36F, 0x1F370, 0x1F371, 0x1F372, 0x1F373, 0x1F374, 0x1F375, 0x1F376, 0x1F377, 0x1F378,
-        0x1F379, 0x1F37A, 0x1F37B, 0x1F37C, 0x1F37D, 0x1F37E, 0x1F37F, 0x1F380, 0x1F381, 0x1F382,
-        0x1F383, 0x1F384, 0x1F385, 0x1F386, 0x1F387, 0x1F388, 0x1F389, 0x1F38A, 0x1F38B, 0x1F38C,
-        0x1F38D, 0x1F38E, 0x1F38F, 0x1F390, 0x1F391, 0x1F392, 0x1F393, 0x1F396, 0x1F397, 0x1F399,
-        0x1F39A, 0x1F39B, 0x1F39E, 0x1F39F, 0x1F3A0, 0x1F3A1, 0x1F3A2, 0x1F3A3, 0x1F3A4, 0x1F3A5,
-        0x1F3A6, 0x1F3A7, 0x1F3A8, 0x1F3A9, 0x1F3AA, 0x1F3AB, 0x1F3AC, 0x1F3AD, 0x1F3AE, 0x1F3AF,
-        0x1F3B0, 0x1F3B1, 0x1F3B2, 0x1F3B3, 0x1F3B4, 0x1F3B5, 0x1F3B6, 0x1F3B7, 0x1F3B8, 0x1F3B9,
-        0x1F3BA, 0x1F3BB, 0x1F3BC, 0x1F3BD, 0x1F3BE, 0x1F3BF, 0x1F3C0, 0x1F3C1, 0x1F3C2, 0x1F3C3,
-        0x1F3C4, 0x1F3C5, 0x1F3C6, 0x1F3C7, 0x1F3C8, 0x1F3C9, 0x1F3CA, 0x1F3CB, 0x1F3CC, 0x1F3CD,
-        0x1F3CE, 0x1F3CF, 0x1F3D0, 0x1F3D1, 0x1F3D2, 0x1F3D3, 0x1F3D4, 0x1F3D5, 0x1F3D6, 0x1F3D7,
-        0x1F3D8, 0x1F3D9, 0x1F3DA, 0x1F3DB, 0x1F3DC, 0x1F3DD, 0x1F3DE, 0x1F3DF, 0x1F3E0, 0x1F3E1,
-        0x1F3E2, 0x1F3E3, 0x1F3E4, 0x1F3E5, 0x1F3E6, 0x1F3E7, 0x1F3E8, 0x1F3E9, 0x1F3EA, 0x1F3EB,
-        0x1F3EC, 0x1F3ED, 0x1F3EE, 0x1F3EF, 0x1F3F0, 0x1F3F3, 0x1F3F4, 0x1F3F5, 0x1F3F7, 0x1F3F8,
-        0x1F3F9, 0x1F3FA, 0x1F3FB, 0x1F3FC, 0x1F3FD, 0x1F3FE, 0x1F3FF, 0x1F400, 0x1F401, 0x1F402,
-        0x1F403, 0x1F404, 0x1F405, 0x1F406, 0x1F407, 0x1F408, 0x1F409, 0x1F40A, 0x1F40B, 0x1F40C,
-        0x1F40D, 0x1F40E, 0x1F40F, 0x1F410, 0x1F411, 0x1F412, 0x1F413, 0x1F414, 0x1F415, 0x1F416,
-        0x1F417, 0x1F418, 0x1F419, 0x1F41A, 0x1F41B, 0x1F41C, 0x1F41D, 0x1F41E, 0x1F41F, 0x1F420,
-        0x1F421, 0x1F422, 0x1F423, 0x1F424, 0x1F425, 0x1F426, 0x1F427, 0x1F428, 0x1F429, 0x1F42A,
-        0x1F42B, 0x1F42C, 0x1F42D, 0x1F42E, 0x1F42F, 0x1F430, 0x1F431, 0x1F432, 0x1F433, 0x1F434,
-        0x1F435, 0x1F436, 0x1F437, 0x1F438, 0x1F439, 0x1F43A, 0x1F43B, 0x1F43C, 0x1F43D, 0x1F43E,
-        0x1F43F, 0x1F440, 0x1F441, 0x1F442, 0x1F443, 0x1F444, 0x1F445, 0x1F446, 0x1F447, 0x1F448,
-        0x1F449, 0x1F44A, 0x1F44B, 0x1F44C, 0x1F44D, 0x1F44E, 0x1F44F, 0x1F450, 0x1F451, 0x1F452,
-        0x1F453, 0x1F454, 0x1F455, 0x1F456, 0x1F457, 0x1F458, 0x1F459, 0x1F45A, 0x1F45B, 0x1F45C,
-        0x1F45D, 0x1F45E, 0x1F45F, 0x1F460, 0x1F461, 0x1F462, 0x1F463, 0x1F464, 0x1F465, 0x1F466,
-        0x1F467, 0x1F468, 0x1F469, 0x1F46A, 0x1F46B, 0x1F46C, 0x1F46D, 0x1F46E, 0x1F46F, 0x1F470,
-        0x1F471, 0x1F472, 0x1F473, 0x1F474, 0x1F475, 0x1F476, 0x1F477, 0x1F478, 0x1F479, 0x1F47A,
-        0x1F47B, 0x1F47C, 0x1F47D, 0x1F47E, 0x1F47F, 0x1F480, 0x1F481, 0x1F482, 0x1F483, 0x1F484,
-        0x1F485, 0x1F486, 0x1F487, 0x1F488, 0x1F489, 0x1F48A, 0x1F48B, 0x1F48C, 0x1F48D, 0x1F48E,
-        0x1F48F, 0x1F490, 0x1F491, 0x1F492, 0x1F493, 0x1F494, 0x1F495, 0x1F496, 0x1F497, 0x1F498,
-        0x1F499, 0x1F49A, 0x1F49B, 0x1F49C, 0x1F49D, 0x1F49E, 0x1F49F, 0x1F4A0, 0x1F4A1, 0x1F4A2,
-        0x1F4A3, 0x1F4A4, 0x1F4A5, 0x1F4A6, 0x1F4A7, 0x1F4A8, 0x1F4A9, 0x1F4AA, 0x1F4AB, 0x1F4AC,
-        0x1F4AD, 0x1F4AE, 0x1F4AF, 0x1F4B0, 0x1F4B1, 0x1F4B2, 0x1F4B3, 0x1F4B4, 0x1F4B5, 0x1F4B6,
-        0x1F4B7, 0x1F4B8, 0x1F4B9, 0x1F4BA, 0x1F4BB, 0x1F4BC, 0x1F4BD, 0x1F4BE, 0x1F4BF, 0x1F4C0,
-        0x1F4C1, 0x1F4C2, 0x1F4C3, 0x1F4C4, 0x1F4C5, 0x1F4C6, 0x1F4C7, 0x1F4C8, 0x1F4C9, 0x1F4CA,
-        0x1F4CB, 0x1F4CC, 0x1F4CD, 0x1F4CE, 0x1F4CF, 0x1F4D0, 0x1F4D1, 0x1F4D2, 0x1F4D3, 0x1F4D4,
-        0x1F4D5, 0x1F4D6, 0x1F4D7, 0x1F4D8, 0x1F4D9, 0x1F4DA, 0x1F4DB, 0x1F4DC, 0x1F4DD, 0x1F4DE,
-        0x1F4DF, 0x1F4E0, 0x1F4E1, 0x1F4E2, 0x1F4E3, 0x1F4E4, 0x1F4E5, 0x1F4E6, 0x1F4E7, 0x1F4E8,
-        0x1F4E9, 0x1F4EA, 0x1F4EB, 0x1F4EC, 0x1F4ED, 0x1F4EE, 0x1F4EF, 0x1F4F0, 0x1F4F1, 0x1F4F2,
-        0x1F4F3, 0x1F4F4, 0x1F4F5, 0x1F4F6, 0x1F4F7, 0x1F4F8, 0x1F4F9, 0x1F4FA, 0x1F4FB, 0x1F4FC,
-        0x1F4FD, 0x1F4FF, 0x1F500, 0x1F501, 0x1F502, 0x1F503, 0x1F504, 0x1F505, 0x1F506, 0x1F507,
-        0x1F508, 0x1F509, 0x1F50A, 0x1F50B, 0x1F50C, 0x1F50D, 0x1F50E, 0x1F50F, 0x1F510, 0x1F511,
-        0x1F512, 0x1F513, 0x1F514, 0x1F515, 0x1F516, 0x1F517, 0x1F518, 0x1F519, 0x1F51A, 0x1F51B,
-        0x1F51C, 0x1F51D, 0x1F51E, 0x1F51F, 0x1F520, 0x1F521, 0x1F522, 0x1F523, 0x1F524, 0x1F525,
-        0x1F526, 0x1F527, 0x1F528, 0x1F529, 0x1F52A, 0x1F52B, 0x1F52C, 0x1F52D, 0x1F52E, 0x1F52F,
-        0x1F530, 0x1F531, 0x1F532, 0x1F533, 0x1F534, 0x1F535, 0x1F536, 0x1F537, 0x1F538, 0x1F539,
-        0x1F53A, 0x1F53B, 0x1F53C, 0x1F53D, 0x1F549, 0x1F54A, 0x1F54B, 0x1F54C, 0x1F54D, 0x1F54E,
-        0x1F550, 0x1F551, 0x1F552, 0x1F553, 0x1F554, 0x1F555, 0x1F556, 0x1F557, 0x1F558, 0x1F559,
-        0x1F55A, 0x1F55B, 0x1F55C, 0x1F55D, 0x1F55E, 0x1F55F, 0x1F560, 0x1F561, 0x1F562, 0x1F563,
-        0x1F564, 0x1F565, 0x1F566, 0x1F567, 0x1F56F, 0x1F570, 0x1F573, 0x1F574, 0x1F575, 0x1F576,
-        0x1F577, 0x1F578, 0x1F579, 0x1F57A, 0x1F587, 0x1F58A, 0x1F58B, 0x1F58C, 0x1F58D, 0x1F590,
-        0x1F595, 0x1F596, 0x1F5A4, 0x1F5A5, 0x1F5A8, 0x1F5B1, 0x1F5B2, 0x1F5BC, 0x1F5C2, 0x1F5C3,
-        0x1F5C4, 0x1F5D1, 0x1F5D2, 0x1F5D3, 0x1F5DC, 0x1F5DD, 0x1F5DE, 0x1F5E1, 0x1F5E3, 0x1F5E8,
-        0x1F5EF, 0x1F5F3, 0x1F5FA, 0x1F5FB, 0x1F5FC, 0x1F5FD, 0x1F5FE, 0x1F5FF, 0x1F600, 0x1F601,
-        0x1F602, 0x1F603, 0x1F604, 0x1F605, 0x1F606, 0x1F607, 0x1F608, 0x1F609, 0x1F60A, 0x1F60B,
-        0x1F60C, 0x1F60D, 0x1F60E, 0x1F60F, 0x1F610, 0x1F611, 0x1F612, 0x1F613, 0x1F614, 0x1F615,
-        0x1F616, 0x1F617, 0x1F618, 0x1F619, 0x1F61A, 0x1F61B, 0x1F61C, 0x1F61D, 0x1F61E, 0x1F61F,
-        0x1F620, 0x1F621, 0x1F622, 0x1F623, 0x1F624, 0x1F625, 0x1F626, 0x1F627, 0x1F628, 0x1F629,
-        0x1F62A, 0x1F62B, 0x1F62C, 0x1F62D, 0x1F62E, 0x1F62F, 0x1F630, 0x1F631, 0x1F632, 0x1F633,
-        0x1F634, 0x1F635, 0x1F636, 0x1F637, 0x1F638, 0x1F639, 0x1F63A, 0x1F63B, 0x1F63C, 0x1F63D,
-        0x1F63E, 0x1F63F, 0x1F640, 0x1F641, 0x1F642, 0x1F643, 0x1F644, 0x1F645, 0x1F646, 0x1F647,
-        0x1F648, 0x1F649, 0x1F64A, 0x1F64B, 0x1F64C, 0x1F64D, 0x1F64E, 0x1F64F, 0x1F680, 0x1F681,
-        0x1F682, 0x1F683, 0x1F684, 0x1F685, 0x1F686, 0x1F687, 0x1F688, 0x1F689, 0x1F68A, 0x1F68B,
-        0x1F68C, 0x1F68D, 0x1F68E, 0x1F68F, 0x1F690, 0x1F691, 0x1F692, 0x1F693, 0x1F694, 0x1F695,
-        0x1F696, 0x1F697, 0x1F698, 0x1F699, 0x1F69A, 0x1F69B, 0x1F69C, 0x1F69D, 0x1F69E, 0x1F69F,
-        0x1F6A0, 0x1F6A1, 0x1F6A2, 0x1F6A3, 0x1F6A4, 0x1F6A5, 0x1F6A6, 0x1F6A7, 0x1F6A8, 0x1F6A9,
-        0x1F6AA, 0x1F6AB, 0x1F6AC, 0x1F6AD, 0x1F6AE, 0x1F6AF, 0x1F6B0, 0x1F6B1, 0x1F6B2, 0x1F6B3,
-        0x1F6B4, 0x1F6B5, 0x1F6B6, 0x1F6B7, 0x1F6B8, 0x1F6B9, 0x1F6BA, 0x1F6BB, 0x1F6BC, 0x1F6BD,
-        0x1F6BE, 0x1F6BF, 0x1F6C0, 0x1F6C1, 0x1F6C2, 0x1F6C3, 0x1F6C4, 0x1F6C5, 0x1F6CB, 0x1F6CC,
-        0x1F6CD, 0x1F6CE, 0x1F6CF, 0x1F6D0, 0x1F6D1, 0x1F6D2, 0x1F6E0, 0x1F6E1, 0x1F6E2, 0x1F6E3,
-        0x1F6E4, 0x1F6E5, 0x1F6E9, 0x1F6EB, 0x1F6EC, 0x1F6F0, 0x1F6F3, 0x1F6F4, 0x1F6F5, 0x1F6F6,
-        0x1F910, 0x1F911, 0x1F912, 0x1F913, 0x1F914, 0x1F915, 0x1F916, 0x1F917, 0x1F918, 0x1F919,
-        0x1F91A, 0x1F91B, 0x1F91C, 0x1F91D, 0x1F91E, 0x1F920, 0x1F921, 0x1F922, 0x1F923, 0x1F924,
-        0x1F925, 0x1F926, 0x1F927, 0x1F930, 0x1F933, 0x1F934, 0x1F935, 0x1F936, 0x1F937, 0x1F938,
-        0x1F939, 0x1F93A, 0x1F93C, 0x1F93D, 0x1F93E, 0x1F940, 0x1F941, 0x1F942, 0x1F943, 0x1F944,
-        0x1F945, 0x1F947, 0x1F948, 0x1F949, 0x1F94A, 0x1F94B, 0x1F950, 0x1F951, 0x1F952, 0x1F953,
-        0x1F954, 0x1F955, 0x1F956, 0x1F957, 0x1F958, 0x1F959, 0x1F95A, 0x1F95B, 0x1F95C, 0x1F95D,
-        0x1F95E, 0x1F980, 0x1F981, 0x1F982, 0x1F983, 0x1F984, 0x1F985, 0x1F986, 0x1F987, 0x1F988,
-        0x1F989, 0x1F98A, 0x1F98B, 0x1F98C, 0x1F98D, 0x1F98E, 0x1F98F, 0x1F990, 0x1F991, 0x1F9C0
-    };
-
-    // See http://www.unicode.org/Public/emoji/3.0/emoji-data.txt
-    private static int[] EMOJI_MODIFIER_BASE = {
-        0x261D, 0x26F9, 0x270A, 0x270B, 0x270C, 0x270D, 0x1F385, 0x1F3C3, 0x1F3C4, 0x1F3CA,
-        0x1F3CB, 0x1F442, 0x1F443, 0x1F446, 0x1F447, 0x1F448, 0x1F449, 0x1F44A, 0x1F44B, 0x1F44C,
-        0x1F44D, 0x1F44E, 0x1F44F, 0x1F450, 0x1F466, 0x1F467, 0x1F468, 0x1F469, 0x1F46E, 0x1F470,
-        0x1F471, 0x1F472, 0x1F473, 0x1F474, 0x1F475, 0x1F476, 0x1F477, 0x1F478, 0x1F47C, 0x1F481,
-        0x1F482, 0x1F483, 0x1F485, 0x1F486, 0x1F487, 0x1F4AA, 0x1F575, 0x1F57A, 0x1F590, 0x1F595,
-        0x1F596, 0x1F645, 0x1F646, 0x1F647, 0x1F64B, 0x1F64C, 0x1F64D, 0x1F64E, 0x1F64F, 0x1F6A3,
-        0x1F6B4, 0x1F6B5, 0x1F6B6, 0x1F6C0, 0x1F918, 0x1F919, 0x1F91A, 0x1F91B, 0x1F91C, 0x1F91D,
-        0x1F91E, 0x1F926, 0x1F930, 0x1F933, 0x1F934, 0x1F935, 0x1F936, 0x1F937, 0x1F938, 0x1F939,
-        0x1F93C, 0x1F93D, 0x1F93E
-    };
-
-    // See http://www.unicode.org/emoji/charts/emoji-zwj-sequences.html
-    private static int[] ZWJ_EMOJI = {
-        0x2764, 0x1F441, 0x1F466, 0x1F467, 0x1F468, 0x1F469, 0x1F48B, 0x1F5E8
-    };
-
     public static int COMBINING_ENCLOSING_KEYCAP = 0x20E3;
 
     public static int ZERO_WIDTH_JOINER = 0x200D;
@@ -165,24 +32,55 @@
 
     public static int CANCEL_TAG = 0xE007F;
 
-    // Returns true if the given code point is regional indicator symbol.
-    public static boolean isRegionalIndicatorSymbol(int codepoint) {
-        return 0x1F1E6 <= codepoint && codepoint <= 0x1F1FF;
+    /**
+     * Returns true if the given code point is regional indicator symbol.
+     */
+    public static boolean isRegionalIndicatorSymbol(int codePoint) {
+        return 0x1F1E6 <= codePoint && codePoint <= 0x1F1FF;
     }
 
-    // Returns true if the given code point is emoji modifier.
-    public static boolean isEmojiModifier(int codepoint) {
-        return 0x1F3FB <= codepoint && codepoint <= 0x1F3FF;
+    /**
+     * Returns true if the given code point is emoji modifier.
+     */
+    public static boolean isEmojiModifier(int codePoint) {
+        return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI_MODIFIER);
     }
 
     // Returns true if the given code point is emoji modifier base.
     public static boolean isEmojiModifierBase(int codePoint) {
-        return Arrays.binarySearch(EMOJI_MODIFIER_BASE, codePoint) >= 0;
+        // These two characters were removed from Emoji_Modifier_Base in Emoji 4.0, but we need to
+        // keep them as emoji modifier bases since there are fonts and user-generated text out there
+        // that treats these as potential emoji bases.
+        if (codePoint == 0x1F91D || codePoint == 0x1F93C) {
+            return true;
+        }
+        // Emoji Modifier Base characters new in Unicode emoji 5.0.
+        // From http://www.unicode.org/Public/emoji/5.0/emoji-data.txt
+        // TODO: Remove once emoji-data.text 5.0 is in ICU or update to 6.0.
+        if (codePoint == 0x1F91F
+                || (0x1F931 <= codePoint && codePoint <= 0x1F932)
+                || (0x1F9D1 <= codePoint && codePoint <= 0x1F9DD)) {
+            return true;
+        }
+        return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI_MODIFIER_BASE);
     }
 
     // Returns true if the character has Emoji property.
     public static boolean isEmoji(int codePoint) {
-        return Arrays.binarySearch(EMOJI_LIST, codePoint) >= 0;
+        // Emoji characters new in Unicode emoji 5.0.
+        // From http://www.unicode.org/Public/emoji/5.0/emoji-data.txt
+        // TODO: Remove once emoji-data.text 5.0 is in ICU or update to 6.0.
+        if ((0x1F6F7 <= codePoint && codePoint <= 0x1F6F8)
+                || codePoint == 0x1F91F
+                || (0x1F928 <= codePoint && codePoint <= 0x1F92F)
+                || (0x1F931 <= codePoint && codePoint <= 0x1F932)
+                || codePoint == 0x1F94C
+                || (0x1F95F <= codePoint && codePoint <= 0x1F96B)
+                || (0x1F992 <= codePoint && codePoint <= 0x1F997)
+                || (0x1F9D0 <= codePoint && codePoint <= 0x1F9E6)) {
+            return true;
+        }
+        return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI);
     }
 
     // Returns true if the character can be a base character of COMBINING ENCLOSING KEYCAP.
diff --git a/packages/SettingsLib/res/values/strings.xml b/packages/SettingsLib/res/values/strings.xml
index c64574f..1010a8a 100644
--- a/packages/SettingsLib/res/values/strings.xml
+++ b/packages/SettingsLib/res/values/strings.xml
@@ -775,7 +775,7 @@
     <string name="daltonizer_type_overridden">Overridden by <xliff:g id="title" example="Simulate color space">%1$s</xliff:g></string>
 
     <!-- [CHAR_LIMIT=40] Label for estimated remaining duration of battery charging/discharging -->
-    <string name="power_remaining_duration_only">Approx. <xliff:g id="time">%1$s</xliff:g> left</string>
+    <string name="power_remaining_duration_only">about <xliff:g id="time">%1$s</xliff:g> left</string>
 
     <!-- [CHAR_LIMIT=40] Short label for estimated remaining duration of battery charging/discharging -->
     <string name="power_remaining_duration_only_short"><xliff:g id="time">%1$s</xliff:g> left</string>
@@ -793,25 +793,25 @@
             <xliff:g id="state">%2$s</xliff:g></string>
     <!-- [CHAR_LIMIT=40] Label for battery level chart when charging with duration -->
     <string name="power_charging_duration"><xliff:g id="level">%1$s</xliff:g> -
-            <xliff:g id="time">%2$s</xliff:g> until full</string>
+            <xliff:g id="time">%2$s</xliff:g> until fully charged</string>
     <!-- [CHAR_LIMIT=40] Short label for battery level chart when charging with duration -->
     <string name="power_charging_duration_short"><xliff:g id="level">%1$s</xliff:g> -
         <xliff:g id="time">%2$s</xliff:g></string>
     <!-- [CHAR_LIMIT=40] Label for battery level chart when charging with duration -->
     <string name="power_charging_duration_ac"><xliff:g id="level">%1$s</xliff:g> -
-            <xliff:g id="time">%2$s</xliff:g> until full on AC</string>
+            <xliff:g id="time">%2$s</xliff:g> until fully charged on AC</string>
     <!-- [CHAR_LIMIT=40] Short label for battery level chart when charging with duration -->
     <string name="power_charging_duration_ac_short"><xliff:g id="level">%1$s</xliff:g> -
         <xliff:g id="time">%2$s</xliff:g></string>
     <!-- [CHAR_LIMIT=40] Label for battery level chart when charging with duration -->
     <string name="power_charging_duration_usb"><xliff:g id="level">%1$s</xliff:g> -
-            <xliff:g id="time">%2$s</xliff:g> until full over USB</string>
+            <xliff:g id="time">%2$s</xliff:g> until fully charged over USB</string>
     <!-- [CHAR_LIMIT=40] Short label for battery level chart when charging with duration -->
     <string name="power_charging_duration_usb_short"><xliff:g id="level">%1$s</xliff:g> -
         <xliff:g id="time">%2$s</xliff:g></string>
     <!-- [CHAR_LIMIT=40] Label for battery level chart when charging with duration -->
     <string name="power_charging_duration_wireless"><xliff:g id="level">%1$s</xliff:g> -
-            <xliff:g id="time">%2$s</xliff:g> until full from wireless</string>
+            <xliff:g id="time">%2$s</xliff:g> until fully charged from wireless</string>
     <!-- [CHAR_LIMIT=40] Label for battery level chart when charging with duration -->
     <string name="power_charging_duration_wireless_short"><xliff:g id="level">%1$s</xliff:g> -
         <xliff:g id="time">%2$s</xliff:g></string>
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShelf.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShelf.java
index 8da17fa..b7b4a3b 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShelf.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShelf.java
@@ -23,7 +23,6 @@
 import android.view.View;
 import android.view.ViewGroup;
 
-import com.android.internal.widget.CachingIconView;
 import com.android.systemui.Interpolators;
 import com.android.systemui.R;
 import com.android.systemui.ViewInvertHelper;
@@ -127,12 +126,7 @@
         super.setDark(dark, fade, delay);
         if (mDark == dark) return;
         mDark = dark;
-        if (fade) {
-            mViewInvertHelper.fade(dark, delay);
-        } else {
-            mViewInvertHelper.update(dark);
-        }
-        mShelfIcons.setAmbient(dark);
+        mShelfIcons.setDark(dark, fade, delay);
     }
 
     @Override
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/StatusBarIconView.java b/packages/SystemUI/src/com/android/systemui/statusbar/StatusBarIconView.java
index 1101701..ffc4e8d 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/StatusBarIconView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/StatusBarIconView.java
@@ -27,6 +27,7 @@
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.graphics.Canvas;
+import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
@@ -46,6 +47,7 @@
 import com.android.internal.statusbar.StatusBarIcon;
 import com.android.systemui.Interpolators;
 import com.android.systemui.R;
+import com.android.systemui.statusbar.notification.NotificationIconDozeHelper;
 import com.android.systemui.statusbar.notification.NotificationUtils;
 
 import java.text.NumberFormat;
@@ -99,7 +101,6 @@
     private int mDensity;
     private float mIconScale = 1.0f;
     private final Paint mDotPaint = new Paint();
-    private boolean mDotVisible;
     private float mDotRadius;
     private int mStaticDotRadius;
     private int mVisibleState = STATE_ICON;
@@ -110,6 +111,8 @@
     private OnVisibilityChangedListener mOnVisibilityChangedListener;
     private int mDrawableColor;
     private int mIconColor;
+    private int mDecorColor;
+    private float mDarkAmount;
     private ValueAnimator mColorAnimator;
     private int mCurrentSetColor = NO_COLOR;
     private int mAnimationStartColor = NO_COLOR;
@@ -119,6 +122,7 @@
                 animation.getAnimatedFraction());
         setColorInternal(newColor);
     };
+    private final NotificationIconDozeHelper mDozer;
 
     public StatusBarIconView(Context context, String slot, Notification notification) {
         this(context, slot, notification, false);
@@ -127,6 +131,7 @@
     public StatusBarIconView(Context context, String slot, Notification notification,
             boolean blocked) {
         super(context);
+        mDozer = new NotificationIconDozeHelper(context);
         mBlocked = blocked;
         mSlot = slot;
         mNumberPain = new Paint();
@@ -190,6 +195,7 @@
 
     public StatusBarIconView(Context context, AttributeSet attrs) {
         super(context, attrs);
+        mDozer = new NotificationIconDozeHelper(context);
         mBlocked = false;
         mAlwaysScaleIcon = true;
         updateIconScale();
@@ -466,7 +472,19 @@
      * to the drawable.
      */
     public void setDecorColor(int iconTint) {
-        mDotPaint.setColor(iconTint);
+        mDecorColor = iconTint;
+        updateDecorColor();
+    }
+
+    private void updateDecorColor() {
+        int color = NotificationUtils.interpolateColors(mDecorColor, Color.WHITE, mDarkAmount);
+        if (mDotPaint.getColor() != color) {
+            mDotPaint.setColor(color);
+
+            if (mDotAppearAmount != 0) {
+                invalidate();
+            }
+        }
     }
 
     /**
@@ -477,6 +495,7 @@
         mDrawableColor = color;
         setColorInternal(color);
         mIconColor = color;
+        mDozer.setColor(color);
     }
 
     private void setColorInternal(int color) {
@@ -649,6 +668,14 @@
         mOnVisibilityChangedListener = listener;
     }
 
+    public void setDark(boolean dark, boolean fade, long delay) {
+        mDozer.setImageDark(this, dark, fade, delay, mIconColor != NO_COLOR);
+        mDozer.setIntensityDark(f -> {
+            mDarkAmount = f;
+            updateDecorColor();
+        }, dark, fade, delay);
+    }
+
     public interface OnVisibilityChangedListener {
         void onVisibilityChanged(int newVisibility);
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationCustomViewWrapper.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationCustomViewWrapper.java
index 3efa29f..bca4b43 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationCustomViewWrapper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationCustomViewWrapper.java
@@ -18,7 +18,7 @@
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
-import android.animation.ValueAnimator;
+import android.content.Context;
 import android.graphics.ColorMatrixColorFilter;
 import android.graphics.Paint;
 import android.view.View;
@@ -38,8 +38,8 @@
     private boolean mIsLegacy;
     private int mLegacyColor;
 
-    protected NotificationCustomViewWrapper(View view, ExpandableNotificationRow row) {
-        super(view, row);
+    protected NotificationCustomViewWrapper(Context ctx, View view, ExpandableNotificationRow row) {
+        super(ctx, view, row);
         mInvertHelper = new ViewInvertHelper(view, NotificationPanelView.DOZE_ANIMATION_DURATION);
         mLegacyColor = row.getContext().getColor(R.color.notification_legacy_background_color);
     }
@@ -67,13 +67,11 @@
     }
 
     protected void fadeGrayscale(final boolean dark, long delay) {
-        startIntensityAnimation(new ValueAnimator.AnimatorUpdateListener() {
-            @Override
-            public void onAnimationUpdate(ValueAnimator animation) {
-                updateGrayscaleMatrix((float) animation.getAnimatedValue());
-                mGreyPaint.setColorFilter(new ColorMatrixColorFilter(mGrayscaleColorMatrix));
-                mView.setLayerPaint(mGreyPaint);
-            }
+        getDozer().startIntensityAnimation(animation -> {
+            getDozer().updateGrayscaleMatrix((float) animation.getAnimatedValue());
+            mGreyPaint.setColorFilter(
+                    new ColorMatrixColorFilter(getDozer().getGrayscaleColorMatrix()));
+            mView.setLayerPaint(mGreyPaint);
         }, dark, delay, new AnimatorListenerAdapter() {
             @Override
             public void onAnimationEnd(Animator animation) {
@@ -86,9 +84,9 @@
 
     protected void updateGrayscale(boolean dark) {
         if (dark) {
-            updateGrayscaleMatrix(1f);
+            getDozer().updateGrayscaleMatrix(1f);
             mGreyPaint.setColorFilter(
-                    new ColorMatrixColorFilter(mGrayscaleColorMatrix));
+                    new ColorMatrixColorFilter(getDozer().getGrayscaleColorMatrix()));
             mView.setLayerPaint(mGreyPaint);
         }
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationDozeHelper.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationDozeHelper.java
new file mode 100644
index 0000000..d592c5f
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationDozeHelper.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.statusbar.notification;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ValueAnimator;
+import android.graphics.ColorMatrix;
+import android.graphics.ColorMatrixColorFilter;
+import android.widget.ImageView;
+
+import com.android.systemui.Interpolators;
+import com.android.systemui.statusbar.phone.NotificationPanelView;
+
+import java.util.function.Consumer;
+
+public class NotificationDozeHelper {
+    private final ColorMatrix mGrayscaleColorMatrix = new ColorMatrix();
+
+    public void fadeGrayscale(final ImageView target, final boolean dark, long delay) {
+        startIntensityAnimation(new ValueAnimator.AnimatorUpdateListener() {
+            @Override
+            public void onAnimationUpdate(ValueAnimator animation) {
+                updateGrayscaleMatrix((float) animation.getAnimatedValue());
+                target.setColorFilter(new ColorMatrixColorFilter(mGrayscaleColorMatrix));
+            }
+        }, dark, delay, new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                if (!dark) {
+                    target.setColorFilter(null);
+                }
+            }
+        });
+    }
+
+    public void updateGrayscale(ImageView target, boolean dark) {
+        if (dark) {
+            updateGrayscaleMatrix(1f);
+            target.setColorFilter(new ColorMatrixColorFilter(mGrayscaleColorMatrix));
+        } else {
+            target.setColorFilter(null);
+        }
+    }
+
+    public void startIntensityAnimation(ValueAnimator.AnimatorUpdateListener updateListener,
+            boolean dark, long delay, Animator.AnimatorListener listener) {
+        float startIntensity = dark ? 0f : 1f;
+        float endIntensity = dark ? 1f : 0f;
+        ValueAnimator animator = ValueAnimator.ofFloat(startIntensity, endIntensity);
+        animator.addUpdateListener(updateListener);
+        animator.setDuration(NotificationPanelView.DOZE_ANIMATION_DURATION);
+        animator.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
+        animator.setStartDelay(delay);
+        if (listener != null) {
+            animator.addListener(listener);
+        }
+        animator.start();
+    }
+
+    public void setIntensityDark(Consumer<Float> listener, boolean dark,
+            boolean animate, long delay) {
+        if (animate) {
+            startIntensityAnimation(a -> listener.accept((Float) a.getAnimatedValue()), dark, delay,
+                    null /* listener */);
+        } else {
+            listener.accept(dark ? 1f : 0f);
+        }
+    }
+
+    public void updateGrayscaleMatrix(float intensity) {
+        mGrayscaleColorMatrix.setSaturation(1 - intensity);
+    }
+
+    public ColorMatrix getGrayscaleColorMatrix() {
+        return mGrayscaleColorMatrix;
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationHeaderViewWrapper.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationHeaderViewWrapper.java
index 38e4ec1..1ffc944 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationHeaderViewWrapper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationHeaderViewWrapper.java
@@ -16,17 +16,10 @@
 
 package com.android.systemui.statusbar.notification;
 
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.animation.ValueAnimator;
 import android.app.Notification;
 import android.content.Context;
-import android.graphics.Color;
 import android.graphics.ColorFilter;
-import android.graphics.ColorMatrixColorFilter;
-import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
-import android.graphics.drawable.Drawable;
 import android.util.ArraySet;
 import android.view.NotificationHeaderView;
 import android.view.View;
@@ -37,7 +30,6 @@
 import android.widget.TextView;
 
 import com.android.systemui.Interpolators;
-import com.android.systemui.R;
 import com.android.systemui.ViewInvertHelper;
 import com.android.systemui.statusbar.ExpandableNotificationRow;
 import com.android.systemui.statusbar.TransformableView;
@@ -55,10 +47,6 @@
 
     private static final Interpolator LOW_PRIORITY_HEADER_CLOSE
             = new PathInterpolator(0.4f, 0f, 0.7f, 1f);
-    private final PorterDuffColorFilter mIconColorFilter = new PorterDuffColorFilter(
-            0, PorterDuff.Mode.SRC_ATOP);
-    private final int mIconDarkAlpha;
-    private final int mIconDarkColor = 0xffffffff;
 
     protected final ViewInvertHelper mInvertHelper;
     protected final ViewTransformationHelper mTransformationHelper;
@@ -74,8 +62,7 @@
     private boolean mTransformLowPriorityTitle;
 
     protected NotificationHeaderViewWrapper(Context ctx, View view, ExpandableNotificationRow row) {
-        super(view, row);
-        mIconDarkAlpha = ctx.getResources().getInteger(R.integer.doze_small_icon_alpha);
+        super(ctx, view, row);
         mInvertHelper = new ViewInvertHelper(ctx, NotificationPanelView.DOZE_ANIMATION_DURATION);
         mTransformationHelper = new ViewTransformationHelper();
 
@@ -108,6 +95,16 @@
         updateInvertHelper();
     }
 
+    @Override
+    protected NotificationDozeHelper createDozer(Context ctx) {
+        return new NotificationIconDozeHelper(ctx);
+    }
+
+    @Override
+    protected NotificationIconDozeHelper getDozer() {
+        return (NotificationIconDozeHelper) super.getDozer();
+    }
+
     protected void resolveHeaderViews() {
         mIcon = (ImageView) mView.findViewById(com.android.internal.R.id.icon);
         mHeaderText = (TextView) mView.findViewById(com.android.internal.R.id.header_text);
@@ -116,6 +113,7 @@
         mColor = resolveColor(mExpandButton);
         mNotificationHeader = (NotificationHeaderView) mView.findViewById(
                 com.android.internal.R.id.notification_header);
+        getDozer().setColor(mColor);
     }
 
     private int resolveColor(ImageView icon) {
@@ -223,90 +221,8 @@
             // It also may lead to bugs where the icon isn't correctly greyed out.
             boolean hadColorFilter = mNotificationHeader.getOriginalIconColor()
                     != NotificationHeaderView.NO_COLOR;
-            if (fade) {
-                if (hadColorFilter) {
-                    fadeIconColorFilter(mIcon, dark, delay);
-                    fadeIconAlpha(mIcon, dark, delay);
-                } else {
-                    fadeGrayscale(mIcon, dark, delay);
-                }
-            } else {
-                if (hadColorFilter) {
-                    updateIconColorFilter(mIcon, dark);
-                    updateIconAlpha(mIcon, dark);
-                } else {
-                    updateGrayscale(mIcon, dark);
-                }
-            }
-        }
-    }
 
-    private void fadeIconColorFilter(final ImageView target, boolean dark, long delay) {
-        startIntensityAnimation(new ValueAnimator.AnimatorUpdateListener() {
-            @Override
-            public void onAnimationUpdate(ValueAnimator animation) {
-                updateIconColorFilter(target, (Float) animation.getAnimatedValue());
-            }
-        }, dark, delay, null /* listener */);
-    }
-
-    private void fadeIconAlpha(final ImageView target, boolean dark, long delay) {
-        startIntensityAnimation(new ValueAnimator.AnimatorUpdateListener() {
-            @Override
-            public void onAnimationUpdate(ValueAnimator animation) {
-                float t = (float) animation.getAnimatedValue();
-                target.setImageAlpha((int) (255 * (1f - t) + mIconDarkAlpha * t));
-            }
-        }, dark, delay, null /* listener */);
-    }
-
-    protected void fadeGrayscale(final ImageView target, final boolean dark, long delay) {
-        startIntensityAnimation(new ValueAnimator.AnimatorUpdateListener() {
-            @Override
-            public void onAnimationUpdate(ValueAnimator animation) {
-                updateGrayscaleMatrix((float) animation.getAnimatedValue());
-                target.setColorFilter(new ColorMatrixColorFilter(mGrayscaleColorMatrix));
-            }
-        }, dark, delay, new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                if (!dark) {
-                    target.setColorFilter(null);
-                }
-            }
-        });
-    }
-
-    private void updateIconColorFilter(ImageView target, boolean dark) {
-        updateIconColorFilter(target, dark ? 1f : 0f);
-    }
-
-    private void updateIconColorFilter(ImageView target, float intensity) {
-        int color = interpolateColor(mColor, mIconDarkColor, intensity);
-        mIconColorFilter.setColor(color);
-        Drawable iconDrawable = target.getDrawable();
-
-        // Also, the notification might have been modified during the animation, so background
-        // might be null here.
-        if (iconDrawable != null) {
-            Drawable d = iconDrawable.mutate();
-            // DrawableContainer ignores the color filter if it's already set, so clear it first to
-            // get it set and invalidated properly.
-            d.setColorFilter(null);
-            d.setColorFilter(mIconColorFilter);
-        }
-    }
-
-    private void updateIconAlpha(ImageView target, boolean dark) {
-        target.setImageAlpha(dark ? mIconDarkAlpha : 255);
-    }
-
-    protected void updateGrayscale(ImageView target, boolean dark) {
-        if (dark) {
-            updateGrayscaleMatrix(1f);
-            target.setColorFilter(new ColorMatrixColorFilter(mGrayscaleColorMatrix));
-        } else {
-            target.setColorFilter(null);
+            getDozer().setImageDark(mIcon, dark, fade, delay, !hadColorFilter);
         }
     }
 
@@ -316,22 +232,6 @@
         mNotificationHeader.setOnClickListener(expandable ? onClickListener : null);
     }
 
-    private static int interpolateColor(int source, int target, float t) {
-        int aSource = Color.alpha(source);
-        int rSource = Color.red(source);
-        int gSource = Color.green(source);
-        int bSource = Color.blue(source);
-        int aTarget = Color.alpha(target);
-        int rTarget = Color.red(target);
-        int gTarget = Color.green(target);
-        int bTarget = Color.blue(target);
-        return Color.argb(
-                (int) (aSource * (1f - t) + aTarget * t),
-                (int) (rSource * (1f - t) + rTarget * t),
-                (int) (gSource * (1f - t) + gTarget * t),
-                (int) (bSource * (1f - t) + bTarget * t));
-    }
-
     @Override
     public NotificationHeaderView getNotificationHeader() {
         return mNotificationHeader;
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationIconDozeHelper.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationIconDozeHelper.java
new file mode 100644
index 0000000..9f79ef2
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationIconDozeHelper.java
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.statusbar.notification;
+
+import android.content.Context;
+import android.graphics.Color;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffColorFilter;
+import android.graphics.drawable.Drawable;
+import android.widget.ImageView;
+
+import com.android.systemui.R;
+
+public class NotificationIconDozeHelper extends NotificationDozeHelper {
+
+    private final int mImageDarkAlpha;
+    private final int mImageDarkColor = 0xffffffff;
+    private final PorterDuffColorFilter mImageColorFilter = new PorterDuffColorFilter(
+            0, PorterDuff.Mode.SRC_ATOP);
+
+    private int mColor = Color.BLACK;
+
+    public NotificationIconDozeHelper(Context ctx) {
+        mImageDarkAlpha = ctx.getResources().getInteger(R.integer.doze_small_icon_alpha);
+    }
+
+    public void setColor(int color) {
+        mColor = color;
+    }
+
+    public void setImageDark(ImageView target, boolean dark, boolean fade, long delay,
+            boolean useGrayscale) {
+        if (fade) {
+            if (!useGrayscale) {
+                fadeImageColorFilter(target, dark, delay);
+                fadeImageAlpha(target, dark, delay);
+            } else {
+                fadeGrayscale(target, dark, delay);
+            }
+        } else {
+            if (!useGrayscale) {
+                updateImageColorFilter(target, dark);
+                updateImageAlpha(target, dark);
+            } else {
+                updateGrayscale(target, dark);
+            }
+        }
+    }
+
+    private void fadeImageColorFilter(final ImageView target, boolean dark, long delay) {
+        startIntensityAnimation(animation -> {
+            updateImageColorFilter(target, (Float) animation.getAnimatedValue());
+        }, dark, delay, null /* listener */);
+    }
+
+    private void fadeImageAlpha(final ImageView target, boolean dark, long delay) {
+        startIntensityAnimation(animation -> {
+            float t = (float) animation.getAnimatedValue();
+            target.setImageAlpha((int) (255 * (1f - t) + mImageDarkAlpha * t));
+        }, dark, delay, null /* listener */);
+    }
+
+    private void updateImageColorFilter(ImageView target, boolean dark) {
+        updateImageColorFilter(target, dark ? 1f : 0f);
+    }
+
+    private void updateImageColorFilter(ImageView target, float intensity) {
+        int color = NotificationUtils.interpolateColors(mColor, mImageDarkColor, intensity);
+        mImageColorFilter.setColor(color);
+        Drawable imageDrawable = target.getDrawable();
+
+        // Also, the notification might have been modified during the animation, so background
+        // might be null here.
+        if (imageDrawable != null) {
+            Drawable d = imageDrawable.mutate();
+            // DrawableContainer ignores the color filter if it's already set, so clear it first to
+            // get it set and invalidated properly.
+            d.setColorFilter(null);
+            d.setColorFilter(mImageColorFilter);
+        }
+    }
+
+    private void updateImageAlpha(ImageView target, boolean dark) {
+        target.setImageAlpha(dark ? mImageDarkAlpha : 255);
+    }
+
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationTemplateViewWrapper.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationTemplateViewWrapper.java
index 846d03a..f0b6b2e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationTemplateViewWrapper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationTemplateViewWrapper.java
@@ -16,7 +16,6 @@
 
 package com.android.systemui.statusbar.notification;
 
-import android.animation.ValueAnimator;
 import android.content.Context;
 import android.graphics.Color;
 import android.service.notification.StatusBarNotification;
@@ -46,7 +45,8 @@
     private int mContentHeight;
     private int mMinHeightHint;
 
-    protected NotificationTemplateViewWrapper(Context ctx, View view, ExpandableNotificationRow row) {
+    protected NotificationTemplateViewWrapper(Context ctx, View view,
+            ExpandableNotificationRow row) {
         super(ctx, view, row);
         mTransformationHelper.setCustomTransformation(
                 new ViewTransformationHelper.CustomTransformation() {
@@ -154,16 +154,20 @@
         // This also clears the existing types
         super.updateTransformedTypes();
         if (mTitle != null) {
-            mTransformationHelper.addTransformedView(TransformableView.TRANSFORMING_VIEW_TITLE, mTitle);
+            mTransformationHelper.addTransformedView(TransformableView.TRANSFORMING_VIEW_TITLE,
+                    mTitle);
         }
         if (mText != null) {
-            mTransformationHelper.addTransformedView(TransformableView.TRANSFORMING_VIEW_TEXT, mText);
+            mTransformationHelper.addTransformedView(TransformableView.TRANSFORMING_VIEW_TEXT,
+                    mText);
         }
         if (mPicture != null) {
-            mTransformationHelper.addTransformedView(TransformableView.TRANSFORMING_VIEW_IMAGE, mPicture);
+            mTransformationHelper.addTransformedView(TransformableView.TRANSFORMING_VIEW_IMAGE,
+                    mPicture);
         }
         if (mProgressBar != null) {
-            mTransformationHelper.addTransformedView(TransformableView.TRANSFORMING_VIEW_PROGRESS, mProgressBar);
+            mTransformationHelper.addTransformedView(TransformableView.TRANSFORMING_VIEW_PROGRESS,
+                    mProgressBar);
         }
     }
 
@@ -173,7 +177,7 @@
             return;
         }
         super.setDark(dark, fade, delay);
-        setPictureGrayscale(dark, fade, delay);
+        setPictureDark(dark, fade, delay);
         setProgressBarDark(dark, fade, delay);
     }
 
@@ -188,12 +192,9 @@
     }
 
     private void fadeProgressDark(final ProgressBar target, final boolean dark, long delay) {
-        startIntensityAnimation(new ValueAnimator.AnimatorUpdateListener() {
-            @Override
-            public void onAnimationUpdate(ValueAnimator animation) {
-                float t = (float) animation.getAnimatedValue();
-                updateProgressDark(target, t);
-            }
+        getDozer().startIntensityAnimation(animation -> {
+            float t = (float) animation.getAnimatedValue();
+            updateProgressDark(target, t);
         }, dark, delay, null /* listener */);
     }
 
@@ -207,13 +208,9 @@
         updateProgressDark(target, dark ? 1f : 0f);
     }
 
-    protected void setPictureGrayscale(boolean grayscale, boolean fade, long delay) {
+    private void setPictureDark(boolean dark, boolean fade, long delay) {
         if (mPicture != null) {
-            if (fade) {
-                fadeGrayscale(mPicture, grayscale, delay);
-            } else {
-                updateGrayscale(mPicture, grayscale);
-            }
+            getDozer().setImageDark(mPicture, dark, fade, delay, true /* useGrayscale */);
         }
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationViewWrapper.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationViewWrapper.java
index c85e8d8..c86616b 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationViewWrapper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationViewWrapper.java
@@ -16,24 +16,17 @@
 
 package com.android.systemui.statusbar.notification;
 
-import android.animation.Animator;
-import android.animation.ValueAnimator;
 import android.content.Context;
 import android.graphics.Color;
-import android.graphics.ColorMatrix;
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
-import android.service.notification.StatusBarNotification;
 import android.support.v4.graphics.ColorUtils;
 import android.view.NotificationHeaderView;
 import android.view.View;
 
-import com.android.systemui.Interpolators;
-import com.android.systemui.R;
 import com.android.systemui.statusbar.CrossFadeHelper;
 import com.android.systemui.statusbar.ExpandableNotificationRow;
 import com.android.systemui.statusbar.TransformableView;
-import com.android.systemui.statusbar.phone.NotificationPanelView;
 
 /**
  * Wraps the actual notification content view; used to implement behaviors which are different for
@@ -41,14 +34,14 @@
  */
 public abstract class NotificationViewWrapper implements TransformableView {
 
-    protected final ColorMatrix mGrayscaleColorMatrix = new ColorMatrix();
     protected final View mView;
     protected final ExpandableNotificationRow mRow;
+    private final NotificationDozeHelper mDozer;
+
     protected boolean mDark;
     private int mBackgroundColor = 0;
     protected boolean mShouldInvertDark;
     protected boolean mDarkInitialized = false;
-    private boolean mForcedInvisible;
 
     public static NotificationViewWrapper wrap(Context ctx, View v, ExpandableNotificationRow row) {
         if (v.getId() == com.android.internal.R.id.status_bar_latest_event_content) {
@@ -65,13 +58,22 @@
         } else if (v instanceof NotificationHeaderView) {
             return new NotificationHeaderViewWrapper(ctx, v, row);
         } else {
-            return new NotificationCustomViewWrapper(v, row);
+            return new NotificationCustomViewWrapper(ctx, v, row);
         }
     }
 
-    protected NotificationViewWrapper(View view, ExpandableNotificationRow row) {
+    protected NotificationViewWrapper(Context ctx, View view, ExpandableNotificationRow row) {
         mView = view;
         mRow = row;
+        mDozer = createDozer(ctx);
+    }
+
+    protected NotificationDozeHelper createDozer(Context ctx) {
+        return new NotificationIconDozeHelper(mView.getContext());
+    }
+
+    protected NotificationDozeHelper getDozer() {
+        return mDozer;
     }
 
     /**
@@ -112,26 +114,6 @@
                 || ColorUtils.calculateLuminance(backgroundColor) > 0.5;
     }
 
-
-    protected void startIntensityAnimation(ValueAnimator.AnimatorUpdateListener updateListener,
-            boolean dark, long delay, Animator.AnimatorListener listener) {
-        float startIntensity = dark ? 0f : 1f;
-        float endIntensity = dark ? 1f : 0f;
-        ValueAnimator animator = ValueAnimator.ofFloat(startIntensity, endIntensity);
-        animator.addUpdateListener(updateListener);
-        animator.setDuration(NotificationPanelView.DOZE_ANIMATION_DURATION);
-        animator.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
-        animator.setStartDelay(delay);
-        if (listener != null) {
-            animator.addListener(listener);
-        }
-        animator.start();
-    }
-
-    protected void updateGrayscaleMatrix(float intensity) {
-        mGrayscaleColorMatrix.setSaturation(1 - intensity);
-    }
-
     /**
      * Update the appearance of the expand button.
      *
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationIconContainer.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationIconContainer.java
index 3706dc8..dee15d8 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationIconContainer.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationIconContainer.java
@@ -95,7 +95,7 @@
     private int mActualLayoutWidth = NO_VALUE;
     private float mActualPaddingEnd = NO_VALUE;
     private float mActualPaddingStart = NO_VALUE;
-    private boolean mCentered;
+    private boolean mDark;
     private boolean mChangingViewPositions;
     private int mAddAnimationStartIndex = -1;
     private int mCannedAnimationStartIndex = -1;
@@ -183,6 +183,9 @@
                 mAddAnimationStartIndex = Math.min(mAddAnimationStartIndex, childIndex);
             }
         }
+        if (mDark && child instanceof StatusBarIconView) {
+            ((StatusBarIconView) child).setDark(mDark, false, 0);
+        }
     }
 
     @Override
@@ -312,7 +315,8 @@
                 numDots++;
             }
         }
-        if (mCentered && translationX < getLayoutEnd()) {
+        boolean center = mDark;
+        if (center && translationX < getLayoutEnd()) {
             float delta = (getLayoutEnd() - translationX) / 2;
             for (int i = 0; i < childCount; i++) {
                 View view = getChildAt(i);
@@ -390,9 +394,15 @@
         mChangingViewPositions = changingViewPositions;
     }
 
-    public void setAmbient(boolean ambient) {
-        mCentered = ambient;
+    public void setDark(boolean dark, boolean fade, long delay) {
+        mDark = dark;
         mDisallowNextAnimation = true;
+        for (int i = 0; i < getChildCount(); i++) {
+            View view = getChildAt(i);
+            if (view instanceof StatusBarIconView) {
+                ((StatusBarIconView) view).setDark(dark, fade, delay);
+            }
+        }
     }
 
     public IconState getIconState(StatusBarIconView icon) {
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index f722a8e..b40e709 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -5384,9 +5384,10 @@
             ProcessCpuTracker processCpuTracker, SparseArray<Boolean> lastPids, String[] nativeProcs) {
         // Use a FileObserver to detect when traces finish writing.
         // The order of traces is considered important to maintain for legibility.
+        final boolean[] closed = new boolean[1];
         FileObserver observer = new FileObserver(tracesPath, FileObserver.CLOSE_WRITE) {
             @Override
-            public synchronized void onEvent(int event, String path) { notify(); }
+            public synchronized void onEvent(int event, String path) { closed[0] = true; notify(); }
         };
 
         try {
@@ -5403,6 +5404,7 @@
                             final long sime = SystemClock.elapsedRealtime();
                             Process.sendSignal(firstPids.get(i), Process.SIGNAL_QUIT);
                             observer.wait(1000);  // Wait for write-close, give up after 1 sec
+                            if (!closed[0]) Slog.w(TAG, "Didn't see close of " + tracesPath);
                             if (DEBUG_ANR) Slog.d(TAG, "Done with pid " + firstPids.get(i)
                                     + " in " + (SystemClock.elapsedRealtime()-sime) + "ms");
                         }
diff --git a/services/core/java/com/android/server/job/JobSchedulerService.java b/services/core/java/com/android/server/job/JobSchedulerService.java
index b316a3b..940f621 100644
--- a/services/core/java/com/android/server/job/JobSchedulerService.java
+++ b/services/core/java/com/android/server/job/JobSchedulerService.java
@@ -1106,8 +1106,7 @@
                         JobStatus runNow = (JobStatus) message.obj;
                         // runNow can be null, which is a controller's way of indicating that its
                         // state is such that all ready jobs should be run immediately.
-                        if (runNow != null && !mPendingJobs.contains(runNow)
-                                && mJobs.containsJob(runNow)) {
+                        if (runNow != null && isReadyToBeExecutedLocked(runNow)) {
                             mJobPackageTracker.notePending(runNow);
                             mPendingJobs.add(runNow);
                         }
@@ -1310,12 +1309,27 @@
          *      - The component is enabled and runnable.
          */
         private boolean isReadyToBeExecutedLocked(JobStatus job) {
+            final boolean jobExists = mJobs.containsJob(job);
             final boolean jobReady = job.isReady();
             final boolean jobPending = mPendingJobs.contains(job);
             final boolean jobActive = isCurrentlyActiveLocked(job);
 
             final int userId = job.getUserId();
             final boolean userStarted = ArrayUtils.contains(mStartedUsers, userId);
+
+            if (DEBUG) {
+                Slog.v(TAG, "isReadyToBeExecutedLocked: " + job.toShortString()
+                        + " exists=" + jobExists
+                        + " ready=" + jobReady + " pending=" + jobPending
+                        + " active=" + jobActive + " userStarted=" + userStarted);
+            }
+
+            // Short circuit: don't do the expensive PM check unless we really think
+            // we might need to run this job now.
+            if (!jobExists || !userStarted || !jobReady || jobPending || jobActive) {
+                return false;
+            }
+
             final boolean componentPresent;
             try {
                 componentPresent = (AppGlobals.getPackageManager().getServiceInfo(
@@ -1327,11 +1341,11 @@
 
             if (DEBUG) {
                 Slog.v(TAG, "isReadyToBeExecutedLocked: " + job.toShortString()
-                        + " ready=" + jobReady + " pending=" + jobPending
-                        + " active=" + jobActive + " userStarted=" + userStarted
                         + " componentPresent=" + componentPresent);
             }
-            return userStarted && componentPresent && jobReady && !jobPending && !jobActive;
+
+            // Everything else checked out so far, so this is the final yes/no check
+            return componentPresent;
         }
 
         /**