Plumb audio focus support for spitzer clients.

content/renderer/media/renderer_webmediaplayer_delegate.h

 // Copyright 2015 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 CONTENT_RENDERER_MEDIA_RENDERER_WEBMEDIAPLAYER_DELEGATE_H_
 #define CONTENT_RENDERER_MEDIA_RENDERER_WEBMEDIAPLAYER_DELEGATE_H_
 
 #include <set>
 
 #include "base/macros.h"
@@ skipping 15 matching lines @@
       public WebMediaPlayerDelegate,
       public base::SupportsWeakPtr<RendererWebMediaPlayerDelegate> {
  public:
   explicit RendererWebMediaPlayerDelegate(content::RenderFrame* render_frame);
   ~RendererWebMediaPlayerDelegate() override;
 
   // Returns true if this RenderFrame has ever seen media playback before.
   bool has_played_media() const { return has_played_media_; }
 
   // WebMediaPlayerDelegate implementation.
-  void DidPlay(blink::WebMediaPlayer* player) override;
-  void DidPause(blink::WebMediaPlayer* player) override;
-  void PlayerGone(blink::WebMediaPlayer* player) override;
   void AddObserver(Observer* observer) override;
-  void RemoveObserver(Observer* observer) override;
+  void DidPlay(Observer* observer) override;
+  void DidPause(Observer* observer) override;
+  void PlayerGone(Observer* observer) override;
   bool IsHidden() override;
 
   // content::RenderFrameObserver overrides.
   void WasHidden() override;
   void WasShown() override;
   bool OnMessageReceived(const IPC::Message& msg) override;
 
  private:
   void OnMediaDelegatePause(int64_t player_cookie);
   void OnMediaDelegatePlay(int64_t player_cookie);
 
   bool has_played_media_ = false;
   base::ObserverList<Observer> observer_list_;
-  std::set<blink::WebMediaPlayer*> players_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererWebMediaPlayerDelegate);
 };
 
 }  // namespace media
 
 #endif  // CONTENT_RENDERER_MEDIA_RENDERER_WEBMEDIAPLAYER_DELEGATE_H_