Chrome OS: avoid suspending on lid close when casting is active.

content/public/browser/media_observer.h

 // Copyright (c) 2012 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_PUBLIC_BROWSER_MEDIA_OBSERVER_H_
 #define CONTENT_PUBLIC_BROWSER_MEDIA_OBSERVER_H_
 
 #include "content/public/browser/media_request_state.h"
 #include "content/public/common/media_stream_request.h"
 
 namespace content {
 
 // An embedder may implement MediaObserver and return it from
 // ContentBrowserClient to receive callbacks as media events occur.
 class MediaObserver {
  public:
   // Called when a audio capture device is plugged in or unplugged.
   virtual void OnAudioCaptureDevicesChanged(
       const MediaStreamDevices& devices) = 0;
 
   // Called when a video capture device is plugged in or unplugged.
   virtual void OnVideoCaptureDevicesChanged(
       const MediaStreamDevices& devices) = 0;
 
   // Called when a media request changes state.
   virtual void OnMediaRequestStateChanged(
       int render_process_id,
       int render_view_id,
       int page_request_id,
+      const GURL& security_origin,
       const MediaStreamDevice& device,
       MediaRequestState state) = 0;
 
   // Called when an audio stream transitions into a playing or paused state, and
   // also at regular intervals to report the current power level of the audio
   // signal in dBFS (decibels relative to full-scale) units.  |clipped| is true
   // if any part of the audio signal has been clipped since the last call.  See
   // media/audio/audio_power_monitor.h for more info.
   virtual void OnAudioStreamPlayingChanged(
       int render_process_id,
       int render_view_id,
       int stream_id,
       bool is_playing,
       float power_dbfs,
       bool clipped) = 0;
 
   // Called when the audio stream is being created.
   virtual void OnCreatingAudioStream(int render_process_id,
                                      int render_view_id) = 0;
 
  protected:
   virtual ~MediaObserver() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_MEDIA_OBSERVER_H_