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/ChooseAccountActivity.java

@@ -216,7 +216,7 @@ public class ChooseAccountActivity extends PreferenceActivity {
                 AuthenticatorDescription desc = mTypeToAuthDescription.get(accountType);
                 Context authContext = createPackageContextAsUser(desc.packageName, 0, mUserHandle);
                 icon = getPackageManager().getUserBadgedIcon(
-                        authContext.getResources().getDrawable(desc.iconId), mUserHandle);
+                        authContext.getDrawable(desc.iconId), mUserHandle);
             } catch (PackageManager.NameNotFoundException e) {
                 // TODO: place holder icon for missing account icons?
                 Log.w(TAG, "No icon name for account type " + accountType);