Let Contraints Controll Mute/Unmute Audio Local Playback For Desktop Sharing

content/browser/media/capture/web_contents_audio_input_stream.h

 // 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.
 //
 // An AudioInputStream which provides a loop-back of all audio output generated
 // by the entire RenderFrame tree associated with a WebContents instance.  The
 // single stream of data is produced by format-converting and mixing all audio
 // output streams.  As the RenderFrameHost tree mutates (e.g., due to page
 // navigations, or crashes/reloads), the stream will continue without
 // interruption.  In other words, WebContentsAudioInputStream provides tab-level
@@ skipping 43 matching lines @@
   // WebContentsCaptureUtil::ExtractTabCaptureTarget().  The caller must
   // guarantee Close() is called on the returned object so that it may
   // self-destruct.
   // |worker_task_runner| is the task runner on which AudioInputCallback methods
   // are called and may or may not be the single thread that invokes the
   // AudioInputStream methods.
   static WebContentsAudioInputStream* Create(
       const std::string& device_id,
       const media::AudioParameters& params,
       const scoped_refptr<base::SingleThreadTaskRunner>& worker_task_runner,
-      AudioMirroringManager* audio_mirroring_manager,
-      bool is_duplication);
+      AudioMirroringManager* audio_mirroring_manager);
 
  private:
   friend class WebContentsAudioInputStreamTest;
 
   // Maintain most state and functionality in an internal ref-counted
   // implementation class.  This object must outlive a call to Close(), until
   // the shutdown tasks running on other threads complete: The
   // AudioMirroringManager on the IO thread, the WebContentsTracker on the UI
   // thread, and the VirtualAudioOuputStreams on the audio thread.
   class Impl;
 
   WebContentsAudioInputStream(int render_process_id,
                               int main_render_frame_id,
                               AudioMirroringManager* mirroring_manager,
                               const scoped_refptr<WebContentsTracker>& tracker,
                               media::VirtualAudioInputStream* mixer_stream,
                               bool is_duplication);
 
   ~WebContentsAudioInputStream() override;
 
   scoped_refptr<Impl> impl_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsAudioInputStream);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_CAPTURE_WEB_CONTENTS_AUDIO_INPUT_STREAM_H_