Introduce new UI_MODE_TYPE_WATCH and qualifier.

Default ui mode to watch if we have FEATURE_WATCH.

Bug:13395758
Change-Id: Ie5ff95de60e69e91ad3612c7d2f1fca7f49061bd
diff --git a/tools/aapt/AaptAssets.cpp b/tools/aapt/AaptAssets.cpp
index 62200d9..729a048 100644
--- a/tools/aapt/AaptAssets.cpp
+++ b/tools/aapt/AaptAssets.cpp
@@ -1117,6 +1117,11 @@
               (out->uiMode&~ResTable_config::MASK_UI_MODE_TYPE)
               | ResTable_config::UI_MODE_TYPE_APPLIANCE;
         return true;
+    } else if (strcmp(name, "watch") == 0) {
+      if (out) out->uiMode =
+              (out->uiMode&~ResTable_config::MASK_UI_MODE_TYPE)
+              | ResTable_config::UI_MODE_TYPE_WATCH;
+        return true;
     }
 
     return false;