Make PipOverlayActivity views visible onResume

Also moved the scheduling of the invisible timeout to onResume.

Change-Id: If56d61a2e20b08748e1c9f7f3ab1b12b22320110
diff --git a/packages/SystemUI/src/com/android/systemui/tv/pip/PipOverlayActivity.java b/packages/SystemUI/src/com/android/systemui/tv/pip/PipOverlayActivity.java
index b407935..7b1764f 100644
--- a/packages/SystemUI/src/com/android/systemui/tv/pip/PipOverlayActivity.java
+++ b/packages/SystemUI/src/com/android/systemui/tv/pip/PipOverlayActivity.java
@@ -50,8 +50,9 @@
     }
 
     @Override
-    protected void onStart() {
-        super.onStart();
+    protected void onResume() {
+        super.onResume();
+        mGuideOverlayView.setVisibility(View.VISIBLE);
         mHandler.removeCallbacks(mHideGuideOverlayRunnable);
         mHandler.postDelayed(mHideGuideOverlayRunnable, SHOW_GUIDE_OVERLAY_VIEW_DURATION_MS);
     }