Support dynamic summary and icon for injected tiles

Bug: 63758074
Test: robotests
Change-Id: I2fa27812800c12606a613896ea2aa69dda393944

src/com/android/settings/dashboard/DashboardFragment.java

@@ -201,7 +201,7 @@ public abstract class DashboardFragment extends SettingsPreferenceFragment
     /**
      * Returns the CategoryKey for loading {@link DashboardCategory} for this fragment.
      */
-    @VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
+    @VisibleForTesting
     public String getCategoryKey() {
         return DashboardFragmentRegistry.PARENT_TO_CATEGORY_KEY_MAP.get(getClass().getName());
     }