Sending viewCreated() event from BrowseFragment.

Change-Id: Ibfc1fd0937666d6c9b5b0db4a726f7904603cf89
diff --git a/samples/SupportLeanbackDemos/src/com/example/android/leanback/BrowseFragment.java b/samples/SupportLeanbackDemos/src/com/example/android/leanback/BrowseFragment.java
index 46d55ac..afd4038 100644
--- a/samples/SupportLeanbackDemos/src/com/example/android/leanback/BrowseFragment.java
+++ b/samples/SupportLeanbackDemos/src/com/example/android/leanback/BrowseFragment.java
@@ -327,6 +327,12 @@
         }
 
         @Override
+        public void onStart() {
+            super.onStart();
+            mMainFragmentAdapter.getFragmentHost().notifyViewCreated(mMainFragmentAdapter);
+        }
+
+        @Override
         public void onViewCreated(View view, Bundle savedInstanceState) {
             setEntranceTransitionState(mEntranceTransitionState);
         }