Introduce half-brightness icon in Power Control widget.

Bug: 5358696
Change-Id: Iae484e786f4dd7a5e88078b69053f01425b79aef
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 71a2d7f..4bbb54a 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -1210,6 +1210,8 @@
                 android:enabled="@bool/has_powercontrol_widget">
             <intent-filter>
                 <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+                <action android:name="android.appwidget.action.APPWIDGET_ENABLED" />
+                <action android:name="android.appwidget.action.APPWIDGET_DISABLED" />
                 <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
                 <action android:name="android.net.conn.BACKGROUND_DATA_SETTING_CHANGED" />
                 <action android:name="android.bluetooth.adapter.action.STATE_CHANGED" />