[Video] MediaSession API event handlers can resume background video.

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 <map>
 #include <memory>
 #include <set>
@@ skipping 27 matching lines @@
  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.
   bool IsFrameHidden() override;
   bool IsFrameClosed() override;
-  bool IsBackgroundVideoPlaybackUnlocked() override;
   int AddObserver(Observer* observer) override;
   void RemoveObserver(int player_id) override;
   void DidPlay(int player_id,
                bool has_video,
                bool has_audio,
                MediaContentType media_content_type) override;
   void DidPause(int player_id) override;
   void PlayerGone(int player_id) override;
   void SetIdle(int player_id, bool is_idle) override;
   bool IsIdle(int player_id) override;
@@ skipping 35 matching lines @@
   void RecordBackgroundVideoPlayback();
 
   // Runs periodically to notify stale players in |idle_player_map_| which
   // have been idle for longer than |timeout|.
   void CleanUpIdlePlayers(base::TimeDelta timeout);
 
   // True if any media has ever been played in this render frame. Affects
   // autoplay logic in RenderFrameImpl.
   bool has_played_media_ = false;
 
-  bool background_video_allowed_ = false;
   bool is_frame_closed_ = false;
   bool is_frame_hidden_for_testing_ = false;
 
   // State related to scheduling UpdateTask(). These are cleared each time
   // UpdateTask() runs.
   bool has_played_video_ = false;
   bool pending_update_task_ = false;
 
   IDMap<Observer*> id_map_;
 
@@ skipping 31 matching lines @@
   // Determined at construction time based on system information; determines
   // when the idle cleanup timer should be fired more aggressively.
   bool is_low_end_device_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererWebMediaPlayerDelegate);
 };
 
 }  // namespace media
 
 #endif  // CONTENT_RENDERER_MEDIA_RENDERER_WEBMEDIAPLAYER_DELEGATE_H_