Media Remoting: Remove old interstitial implementation.

media/remoting/interstitial.h

-// 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_INTERSTITIAL_H_
-#define MEDIA_REMOTING_INTERSTITIAL_H_
-
-#include "base/memory/ref_counted.h"
-
-class SkBitmap;
-
-namespace gfx {
-class Size;
-}
-
-namespace media {
-
-class VideoFrame;
-
-namespace remoting {
-
-enum InterstitialType {
-  BETWEEN_SESSIONS,             // Show background image only.
-  IN_SESSION,                   // Show MEDIA_REMOTING_CASTING_VIDEO_TEXT.
-  ENCRYPTED_MEDIA_FATAL_ERROR,  // Show MEDIA_REMOTING_CAST_ERROR_TEXT.
-};
-
-// Render an interstitial frame--a combination of |image| in the background
-// along with a text message describing what is going on--and return it in a
-// VideoFrame. |image| may be scaled accordingly without changing its aspect
-// ratio. When it has a different aspect ratio than |natural_size|, a scaled
-// |background_image| will be centered in the frame. When |image| is empty, a
-// blank black background will be used.
-//
-// Threading note: This *must* be called on the main thread, because it uses
-// Skia's font rendering facility, which loads/caches fonts on the main thread.
-// http://crbug.com/687473.
-scoped_refptr<VideoFrame> RenderInterstitialFrame(const SkBitmap& image,
-                                                  const gfx::Size& natural_size,
-                                                  InterstitialType type);
-
-}  // namespace remoting
-}  // namespace media
-
-#endif  // MEDIA_REMOTING_INTERSTITIAL_H_