[Media Remoting] Add function to create interstitial.

media/remoting/remoting_interstitial_ui.h

Index: media/remoting/remoting_interstitial_ui.h
diff --git a/media/remoting/remoting_interstitial_ui.h b/media/remoting/remoting_interstitial_ui.h
new file mode 100644
index 0000000000000000000000000000000000000000..c5d44d0509f5d3cf420cbf2e5a8a16240efef5ad
--- /dev/null
+++ b/media/remoting/remoting_interstitial_ui.h
@@ -0,0 +1,21 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_REMOTING_REMOTING_INTERSTITIAL_UI_H_
+#define MEDIA_REMOTING_REMOTING_INTERSTITIAL_UI_H_
+
+#include "base/memory/ref_counted.h"
+#include "media/base/video_frame.h"
+#include "third_party/skia/include/core/SkCanvas.h"
+
+namespace media {
+
+// Gets an 'interstitial' VideoFrame to paint on the media player when the
+// video is being played remotely.
+scoped_refptr<VideoFrame> GetInterstitial(SkCanvas* existing_frame_canvas,
+                                          bool is_remoting_successful);
+
+}  // namespace media
+
+#endif  // MEDIA_REMOTING_REMOTING_INTERSTITIAL_UI_H_