Adds the Clear App dialog for Instant Apps

Adds a confirmation dialog for the user when tapping clear app.

From this dialog the user can either cancel, or confirm they
want to clear the app.

Test: make RunSettingsRoboTests

Bug: 36536695
Change-Id: Idffcf5ef318578ae2e075ea2cbb35323d41acade

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

@@ -37,7 +37,7 @@ public interface ApplicationFeatureProvider {
      *  only relevant to instant apps.
      */
     InstantAppButtonsController newInstantAppButtonsController(Fragment fragment,
-            View view);
+            View view, InstantAppButtonsController.ShowDialogDelegate showDialogDelegate);
 
     /**
      * Calculates the total number of apps installed on the device via policy in the current user