Show default app icon in default app screen.

- Renamed AdvancedAppSettings to DefaultAppSettings.
- Add logic to DefaultAppPreferenceController to also display icon.
- Modified DefautlAssistPrefController to suppress gear icon, and use
  the controller in default app setting UI to display icon.
- Remove dynamic injected payment setting activity and create the
  setting statically in xml.
- Add DefaultPaymentSettingsPreference to display default payment app
  title (no icon because we can't get it)

Change-Id: I6b8c768da0bafe5ec9a85ba9c79c7993b449be25
Fix: 36458534
Test: robotests

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

@@ -22,8 +22,8 @@ import com.android.settings.DisplaySettings;
 import com.android.settings.SecuritySettings;
 import com.android.settings.accounts.AccountDetailDashboardFragment;
 import com.android.settings.accounts.UserAndAccountDashboardFragment;
-import com.android.settings.applications.AdvancedAppSettings;
 import com.android.settings.applications.AppAndNotificationDashboardFragment;
+import com.android.settings.applications.DefaultAppSettings;
 import com.android.settings.connecteddevice.ConnectedDeviceDashboardFragment;
 import com.android.settings.development.DevelopmentSettings;
 import com.android.settings.deviceinfo.StorageDashboardFragment;
@@ -65,7 +65,7 @@ public class DashboardFragmentRegistry {
                 CategoryKey.CATEGORY_APPS);
         PARENT_TO_CATEGORY_KEY_MAP.put(PowerUsageSummary.class.getName(),
                 CategoryKey.CATEGORY_BATTERY);
-        PARENT_TO_CATEGORY_KEY_MAP.put(AdvancedAppSettings.class.getName(),
+        PARENT_TO_CATEGORY_KEY_MAP.put(DefaultAppSettings.class.getName(),
                 CategoryKey.CATEGORY_APPS_DEFAULT);
         PARENT_TO_CATEGORY_KEY_MAP.put(DisplaySettings.class.getName(),
                 CategoryKey.CATEGORY_DISPLAY);