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

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 <memory>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 331 matching lines @@
       StartMirroring();
     }
   }
 }
 
 // static
 WebContentsAudioInputStream* 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) {
   int render_process_id;
   int main_render_frame_id;
   if (!WebContentsMediaCaptureId::ExtractTabCaptureTarget(
           device_id, &render_process_id, &main_render_frame_id)) {
     return NULL;
   }
 
+  bool mute_source;
+  WebContentsMediaCaptureId::ExtractOptions(device_id, nullptr, &mute_source);
+
   return new WebContentsAudioInputStream(
       render_process_id, main_render_frame_id, audio_mirroring_manager,
       new WebContentsTracker(false),
       new media::VirtualAudioInputStream(
           params, worker_task_runner,
           media::VirtualAudioInputStream::AfterCloseCallback()),
-      is_duplication);
+      !mute_source);
 }
 
 WebContentsAudioInputStream::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)
     : impl_(new Impl(render_process_id,
@@ skipping 40 matching lines @@
 
 bool WebContentsAudioInputStream::GetAutomaticGainControl() {
   return impl_->mixer_stream()->GetAutomaticGainControl();
 }
 
 bool WebContentsAudioInputStream::IsMuted() {
   return false;
 }
 
 }  // namespace content