Implement all resolution change policies for desktop and tab capture.

content/browser/media/capture/web_contents_audio_input_stream.cc

 // Copyright (c) 2013 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 "content/browser/media/capture/web_contents_audio_input_stream.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 73 matching lines @@
   void QueryForMatchesOnUIThread(const std::set<SourceFrameRef>& candidates,
                                  const MatchesCallback& results_callback);
   media::AudioOutputStream* AddInput(
       const media::AudioParameters& params) override;
 
   // Callback which is run when |stream| is closed.  Deletes |stream|.
   void ReleaseInput(media::VirtualAudioOutputStream* stream);
 
   // Called by WebContentsTracker when the target of the audio mirroring has
   // changed.
-  void OnTargetChanged(RenderWidgetHost* target);
+  void OnTargetChanged(bool had_target);
 
   // Injected dependencies.
   const int initial_render_process_id_;
   const int initial_main_render_frame_id_;
   AudioMirroringManager* const mirroring_manager_;
   const scoped_refptr<WebContentsTracker> tracker_;
   // The AudioInputStream implementation that handles the audio conversion and
   // mixing details.
   const scoped_ptr<media::VirtualAudioInputStream> mixer_stream_;
 
@@ skipping 193 matching lines @@
       params,
       mixer_stream_.get(),
       base::Bind(&Impl::ReleaseInput, this));
 }
 
 void WebContentsAudioInputStream::Impl::ReleaseInput(
     media::VirtualAudioOutputStream* stream) {
   delete stream;
 }
 
-void WebContentsAudioInputStream::Impl::OnTargetChanged(
-    RenderWidgetHost* target) {
+void WebContentsAudioInputStream::Impl::OnTargetChanged(bool had_target) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
-  is_target_lost_ = !target;
+  is_target_lost_ = !had_target;
 
   if (state_ == MIRRORING) {
     if (is_target_lost_) {
       ReportError();
       Stop();
     } else {
       StartMirroring();
     }
   }
 }
@@ skipping 65 matching lines @@
 
 bool WebContentsAudioInputStream::GetAutomaticGainControl() {
   return impl_->mixer_stream()->GetAutomaticGainControl();
 }
 
 bool WebContentsAudioInputStream::IsMuted() {
   return false;
 }
 
 }  // namespace content