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/accounts/AuthenticatorHelper.java

@@ -111,7 +111,7 @@ final public class AuthenticatorHelper extends BroadcastReceiver {
                 Context authContext = context.createPackageContextAsUser(desc.packageName, 0,
                         mUserHandle);
                 icon = mContext.getPackageManager().getUserBadgedIcon(
-                        authContext.getResources().getDrawable(desc.iconId), mUserHandle);
+                        authContext.getDrawable(desc.iconId), mUserHandle);
                 synchronized (mAccTypeIconCache) {
                     mAccTypeIconCache.put(accountType, icon);
                 }