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

content/renderer/media/webmediaplayer_ms_unittest.cc

 // 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.
 
 #include <stddef.h>
 
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "content/public/renderer/media_stream_renderer_factory.h"
 #include "content/renderer/media/webmediaplayer_ms.h"
@@ skipping 78 matching lines @@
     EXPECT_EQ(delegate_id_, delegate_id);
   }
 
   bool IsStale(int delegate_id) override {
     EXPECT_EQ(delegate_id_, delegate_id);
     return false;
   }
 
   bool IsFrameHidden() override { return is_hidden_; }
   bool IsFrameClosed() override { return false; }
-  bool IsBackgroundVideoPlaybackUnlocked() override { return false; }
 
   void set_hidden(bool is_hidden) { is_hidden_ = is_hidden; }
 
  private:
   int delegate_id_ = 1234;
   Observer* observer_ = nullptr;
   bool playing_ = false;
   bool has_video_ = false;
   bool is_hidden_ = false;
   bool is_gone_ = true;
@@ skipping 335 matching lines @@
   void addTextTrack(blink::WebInbandTextTrack*) override {}
   void removeTextTrack(blink::WebInbandTextTrack*) override {}
   void mediaSourceOpened(blink::WebMediaSource*) override {}
   void requestSeek(double) override {}
   void remoteRouteAvailabilityChanged(
       blink::WebRemotePlaybackAvailability) override {}
   void connectedToRemoteDevice() override {}
   void disconnectedFromRemoteDevice() override {}
   void cancelledRemotePlaybackRequest() override {}
   void remotePlaybackStarted() override {}
+  void wasPausedWhenBackgrounded() override {}
+  void wasResumedWhenForegrounded() override {}
   bool isAutoplayingMuted() override { return false; }
   void requestReload(const blink::WebURL& newUrl) override {}
   bool hasSelectedVideoTrack() override { return false; }
   blink::WebMediaPlayer::TrackId getSelectedVideoTrackId() override {
     return blink::WebMediaPlayer::TrackId();
   }
+  bool isBackgroundVideoPlaybackUnlocked() override { return false; }
 
   // Implementation of cc::VideoFrameProvider::Client
   void StopUsingProvider() override;
   void StartRendering() override;
   void StopRendering() override;
   void DidReceiveFrame() override {}
 
   // For test use
   void SetBackgroundRendering(bool background_rendering) {
     background_rendering_ = background_rendering;
@@ skipping 486 matching lines @@
   // OnShown() should restart after a forced suspension.
   player_->OnFrameShown();
   EXPECT_FALSE(player_->paused());
   EXPECT_CALL(*this, DoSetWebLayer(false));
 
   base::RunLoop().RunUntilIdle();
 }
 #endif
 
 }  // namespace content