Ensures that WebRTC works for device selection using a different sample rate than default

content/renderer/media/media_stream_source_extra_data.h

Index: content/renderer/media/media_stream_source_extra_data.h
diff --git a/content/renderer/media/media_stream_source_extra_data.h b/content/renderer/media/media_stream_source_extra_data.h
index 78e9df18cbafa1371f7fa87c5ac97bbc8b131834..9b334a14ce12814de33ab3f9b037ff251aad3040 100644
--- a/content/renderer/media/media_stream_source_extra_data.h
+++ b/content/renderer/media/media_stream_source_extra_data.h
@@ -8,6 +8,7 @@
 #include "base/compiler_specific.h"
 #include "content/common/content_export.h"
 #include "content/common/media/media_stream_options.h"
+#include "media/base/audio_capturer_source.h"
 #include "third_party/libjingle/source/talk/app/webrtc/videosourceinterface.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebMediaStreamSource.h"
 
@@ -16,8 +17,11 @@ namespace content {
 class CONTENT_EXPORT MediaStreamSourceExtraData
     : NON_EXPORTED_BASE(public WebKit::WebMediaStreamSource::ExtraData) {
  public:
+
   explicit MediaStreamSourceExtraData(
       const StreamDeviceInfo& device_info);
+  explicit MediaStreamSourceExtraData(
+      media::AudioCapturerSource* source);
   virtual ~MediaStreamSourceExtraData();
 
   // Return device information about the camera or microphone.
@@ -30,10 +34,12 @@ class CONTENT_EXPORT MediaStreamSourceExtraData
   }
 
   webrtc::VideoSourceInterface* video_source() { return video_source_; }
+  media::AudioCapturerSource* audio_source() { return audio_source_; }
 
  private:
   StreamDeviceInfo device_info_;
   scoped_refptr<webrtc::VideoSourceInterface> video_source_;
+  scoped_refptr<media::AudioCapturerSource> audio_source_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamSourceExtraData);
 };