MuteSource Audio During Full Screen Cast

content/browser/renderer_host/media/audio_input_renderer_host.cc

 // 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.
 
 #include "content/browser/renderer_host/media/audio_input_renderer_host.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/files/file.h"
@@ skipping 441 matching lines @@
         audio_params,
         device_id,
         entry->writer.get(),
         user_input_monitor_,
         config.automatic_gain_control);
     oss << ", AGC=" << config.automatic_gain_control;
 
     // Only count for captures from desktop media picker dialog and system loop
     // back audio.
     if (entry->controller.get() && type == MEDIA_DESKTOP_AUDIO_CAPTURE &&
-        device_id == media::AudioDeviceDescription::kLoopbackInputDeviceId) {
+        (device_id == media::AudioDeviceDescription::kLoopbackInputDeviceId ||
+         device_id ==
+             media::AudioDeviceDescription::kLoopbackWithMuteDeviceId)) {
       IncrementDesktopCaptureCounter(SYSTEM_LOOPBACK_AUDIO_CAPTURER_CREATED);
     }
   }
 
   if (!entry->controller.get()) {
     SendErrorMessage(stream_id, STREAM_CREATE_ERROR);
     MaybeUnregisterKeyboardMicStream(config);
     return;
   }
 
@@ skipping 247 matching lines @@
   if (entry->input_debug_writer.get()) {
     BrowserThread::PostTask(
         BrowserThread::FILE, FROM_HERE,
         base::Bind(&DeleteInputDebugWriterOnFileThread,
                    base::Passed(std::move(entry->input_debug_writer))));
   }
 }
 #endif  // defined(ENABLE_WEBRTC)
 
 }  // namespace content