Implement MediaCaptureDevices.

content/browser/renderer_host/media/media_stream_manager.cc

Index: content/browser/renderer_host/media/media_stream_manager.cc
diff --git a/content/browser/renderer_host/media/media_stream_manager.cc b/content/browser/renderer_host/media/media_stream_manager.cc
index fdb3b2c8c5e03c8b69578e4b5f072389d17ecc91..1acbfcaba91eb2a65f3a952a6d88484cdf31f245 100644
--- a/content/browser/renderer_host/media/media_stream_manager.cc
+++ b/content/browser/renderer_host/media/media_stream_manager.cc
@@ -18,6 +18,7 @@
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/renderer_host/media/audio_input_device_manager.h"
 #include "content/browser/renderer_host/media/device_request_message_filter.h"
+#include "content/browser/renderer_host/media/media_capture_devices_impl.h"
 #include "content/browser/renderer_host/media/media_stream_requester.h"
 #include "content/browser/renderer_host/media/media_stream_ui_proxy.h"
 #include "content/browser/renderer_host/media/video_capture_manager.h"
@@ -1739,11 +1740,6 @@ void MediaStreamManager::NotifyDevicesChanged(
     MediaStreamType stream_type,
     const StreamDeviceInfoArray& devices) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  MediaObserver* media_observer =
-      GetContentClient()->browser()->GetMediaObserver();
-  if (media_observer == NULL)
-    return;
-
   // Map the devices to MediaStreamDevices.
   MediaStreamDevices new_devices;
   for (StreamDeviceInfoArray::const_iterator it = devices.begin();
@@ -1752,9 +1748,11 @@ void MediaStreamManager::NotifyDevicesChanged(
   }
 
   if (IsAudioMediaType(stream_type)) {
-    media_observer->OnAudioCaptureDevicesChanged(new_devices);
+    MediaCaptureDevicesImpl::GetInstance()->OnAudioCaptureDevicesChanged(
+        new_devices);
   } else if (IsVideoMediaType(stream_type)) {
-    media_observer->OnVideoCaptureDevicesChanged(new_devices);
+    MediaCaptureDevicesImpl::GetInstance()->OnVideoCaptureDevicesChanged(
+        new_devices);
   } else {
     NOTREACHED();
   }