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

content/browser/renderer_host/media/video_capture_manager.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/video_capture_manager.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 574 matching lines @@
 
 std::unique_ptr<media::VideoCaptureDevice>
 VideoCaptureManager::DoStartTabCaptureOnDeviceThread(
     const std::string& id,
     const media::VideoCaptureParams& params,
     std::unique_ptr<VideoCaptureDevice::Client> device_client) {
   SCOPED_UMA_HISTOGRAM_TIMER("Media.VideoCaptureManager.StartDeviceTime");
   DCHECK(IsOnDeviceThread());
 
   std::unique_ptr<VideoCaptureDevice> video_capture_device;
-  video_capture_device.reset(WebContentsVideoCaptureDevice::Create(id));
+  video_capture_device = WebContentsVideoCaptureDevice::Create(id);
 
   if (!video_capture_device) {
     device_client->OnError(FROM_HERE, "Could not create capture device");
     return nullptr;
   }
 
   video_capture_device->AllocateAndStart(params, std::move(device_client));
   return video_capture_device;
 }
 
 std::unique_ptr<media::VideoCaptureDevice>
 VideoCaptureManager::DoStartDesktopCaptureOnDeviceThread(
     const std::string& id,
     const media::VideoCaptureParams& params,
     std::unique_ptr<VideoCaptureDevice::Client> device_client) {
   SCOPED_UMA_HISTOGRAM_TIMER("Media.VideoCaptureManager.StartDeviceTime");
   DCHECK(IsOnDeviceThread());
 
   std::unique_ptr<VideoCaptureDevice> video_capture_device;
 #if defined(ENABLE_SCREEN_CAPTURE)
   DesktopMediaID desktop_id = DesktopMediaID::Parse(id);
   if (desktop_id.is_null()) {
     device_client->OnError(FROM_HERE, "Desktop media ID is null");
     return nullptr;
   }
 
   if (desktop_id.type == DesktopMediaID::TYPE_WEB_CONTENTS) {
-    video_capture_device.reset(WebContentsVideoCaptureDevice::Create(id));
+    video_capture_device = WebContentsVideoCaptureDevice::Create(id);
     IncrementDesktopCaptureCounter(TAB_VIDEO_CAPTURER_CREATED);
     if (desktop_id.audio_share) {
       IncrementDesktopCaptureCounter(TAB_VIDEO_CAPTURER_CREATED_WITH_AUDIO);
     } else {
       IncrementDesktopCaptureCounter(TAB_VIDEO_CAPTURER_CREATED_WITHOUT_AUDIO);
     }
   } else {
 #if defined(OS_ANDROID)
     video_capture_device = base::MakeUnique<ScreenCaptureDeviceAndroid>();
 #elif defined(USE_AURA)
@@ skipping 630 matching lines @@
     if (!device_in_queue) {
       // Session ID is only valid for Screen capture. So we can fake it to
       // resume video capture devices here.
       QueueStartDevice(kFakeSessionId, entry.get(), entry->parameters);
     }
   }
 }
 #endif  // defined(OS_ANDROID)
 
 }  // namespace content