Display anomaly in battery usage page

This cl adds a new parameter, mAnomalies, for
AdvancedPowerUsageDetail.

If it is null, fragment will start AnomalyLoader to detect anomaly.
If not null, just display the anomaly.

Bug: 36925180
Test: RunSettingsRoboTests

Change-Id: I572bc5954c1cdb210d18b6dbe1ab9dba25c0a61f

res/xml/power_usage_detail.xml

@@ -29,6 +29,11 @@
         android:selectable="false"
         android:order="-9999"/>
 
+    <Preference
+        android:key="high_usage"
+        android:icon="@drawable/ic_battery_alert_24dp"
+        android:title="@string/power_high_usage_title"/>
+
     <PreferenceCategory
         android:title="@string/battery_detail_info_title">