Update Settings to use themed Context.getDrawable()

Explicit null theme is passed when using Resources.getDrawable() and
no theme is available, e.g. when using getResourcesForApplication().
This fixes an issue with ic_text_dot theming and helps avoid similar
issues in the future.

BUG: 17648301
Change-Id: I3e97c3490b6f2a55744f567b21284f2935ae9af7

src/com/android/settings/applications/RunningState.java

@@ -679,7 +679,7 @@ public class RunningState {
                     return constState.newDrawable();
                 }
             }
-            return context.getResources().getDrawable(
+            return context.getDrawable(
                     com.android.internal.R.drawable.ic_menu_cc);
         }
     }