Add sysui module for logging SystemUI atoms.

As part of statsd becoming a Mainline module in R, autogenerated
StatsLog.write() calls are going away and replaced by *StatsLog.java
that is autogenerated for each module.
This CL adds autogenerated SysUiStatsLog to SystemUI and replaces usages
of StatsLog with SysUiStatsLog.
Since the write calls in SysUiStatsLog are public, StatsLogCompat is no
longer needed.

Bug: 145952197
Test: m
Test: fastboot flashall
Test: adb shell cmd stats print-logs && adb logcat "*:S statsd:*"
Change-Id: I192ff29d21cedbe715bb02ffa05921b4912af371
diff --git a/packages/SystemUI/shared/Android.bp b/packages/SystemUI/shared/Android.bp
index 4471818..fe6e44b 100644
--- a/packages/SystemUI/shared/Android.bp
+++ b/packages/SystemUI/shared/Android.bp
@@ -12,8 +12,22 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-android_library {
+genrule {
+    name: "statslog-SystemUI-java-gen",
+    tools: ["stats-log-api-gen"],
+    cmd: "$(location stats-log-api-gen) --java $(out) --module sysui --javaPackage com.android.systemui.shared.system --javaClass SysUiStatsLog",
+    out: ["com/android/systemui/shared/system/SysUiStatsLog.java"],
+}
 
+java_library {
+    name: "SystemUI-statsd",
+
+    srcs: [
+        ":statslog-SystemUI-java-gen",
+    ],
+}
+
+android_library {
     name: "SystemUISharedLib",
     srcs: [
         "src/**/*.java",
@@ -21,7 +35,8 @@
     ],
 
     static_libs: [
-        "PluginCoreLib"
+        "PluginCoreLib",
+        "SystemUI-statsd",
     ],
 
     // Enforce that the library is built against java 7 so that there are