Pass camera facing info to audio client

content/browser/renderer_host/media/media_capture_devices_impl.cc

 // Copyright 2014 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/media_capture_devices_impl.h"
 
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/public/browser/browser_thread.h"
 
@@ skipping 33 matching lines @@
 const MediaStreamDevices&
 MediaCaptureDevicesImpl::GetVideoCaptureDevices() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (!devices_enumerated_) {
     EnsureMonitorCaptureDevices();
     devices_enumerated_ = true;
   }
   return video_devices_;
 }
 
+void MediaCaptureDevicesImpl::AddVideoCaptureObserver(
+    media::VideoCaptureObserver* observer) {
+  MediaStreamManager* media_stream_manager =
+      BrowserMainLoop::GetInstance()->media_stream_manager();
+  if (media_stream_manager != nullptr) {
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&MediaStreamManager::AddVideoCaptureObserver,
+                   base::Unretained(media_stream_manager), observer));
+  } else {
+    DVLOG(3) << "media_stream_manager is null.";
+  }
+}
+
+void MediaCaptureDevicesImpl::RemoveAllVideoCaptureObservers() {
+  MediaStreamManager* media_stream_manager =
+      BrowserMainLoop::GetInstance()->media_stream_manager();
+  if (media_stream_manager != nullptr) {
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&MediaStreamManager::RemoveAllVideoCaptureObservers,
+                   base::Unretained(media_stream_manager)));
+  } else {
+    DVLOG(3) << "media_stream_manager is null.";
+  }
+}
+
 void MediaCaptureDevicesImpl::OnAudioCaptureDevicesChanged(
     const MediaStreamDevices& devices) {
   if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
     UpdateAudioDevicesOnUIThread(devices);
   } else {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         base::Bind(&MediaCaptureDevicesImpl::UpdateAudioDevicesOnUIThread,
                    base::Unretained(this), devices));
   }
@@ skipping 26 matching lines @@
 }
 
 void MediaCaptureDevicesImpl::UpdateVideoDevicesOnUIThread(
     const MediaStreamDevices& devices) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   devices_enumerated_ = true;
   video_devices_ = devices;
 }
 
 }  // namespace content