Update icon for battery saver conditon.

To make it consistent with quick settings and battery settings.

Change-Id: I990692b53ee87805d92b93cc874f371e0512154e
Fixes: 80157879
Test: Screenshot

src/com/android/settings/dashboard/conditional/BatterySaverCondition.java

@@ -47,7 +47,7 @@ public class BatterySaverCondition extends Condition implements
 
     @Override
     public Drawable getIcon() {
-        return new BatterySaverDrawable(mManager.getContext(), 0);
+        return mManager.getContext().getDrawable(R.drawable.ic_battery_saver_accent_24dp);
     }
 
     @Override