Add unit tests for webrtc_media_stream_adapter.cc

content/renderer/media/webrtc/media_stream_video_webrtc_sink.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_
 #define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "content/public/renderer/media_stream_video_sink.h"
 #include "content/renderer/media/webrtc/webrtc_video_capturer_adapter.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
 #include "third_party/webrtc/api/mediastreaminterface.h"
 
 namespace content {
 
 class MediaStreamVideoTrack;
 class PeerConnectionDependencyFactory;
 
 // MediaStreamVideoWebRtcSink is an adapter between a
 // content::MediaStreamVideoTrack object and a webrtc VideoTrack that is
 // currently sent on a PeerConnection.
 // The responsibility of the class is to create and own a representation of a
 // webrtc VideoTrack that can be added and removed from a RTCPeerConnection. An
 // instance of MediaStreamVideoWebRtcSink is created when a VideoTrack is added
 // to an RTCPeerConnection object.
 // Instances of this class is owned by the WebRtcMediaStreamAdapter object that
 // created it.
-class MediaStreamVideoWebRtcSink : public MediaStreamVideoSink {
+class CONTENT_EXPORT MediaStreamVideoWebRtcSink : public MediaStreamVideoSink {
  public:
   MediaStreamVideoWebRtcSink(const blink::WebMediaStreamTrack& track,
                              PeerConnectionDependencyFactory* factory);
   ~MediaStreamVideoWebRtcSink() override;
 
   webrtc::VideoTrackInterface* webrtc_video_track() {
     return video_track_.get();
   }
 
+  rtc::Optional<bool> SourceNeedsDenoisingForTesting() const;
+
  protected:
   // Implementation of MediaStreamSink.
   void OnEnabledChanged(bool enabled) override;
 
  private:
   // Helper to request a refresh frame from the source. Called via the callback
   // passed to WebRtcVideoSourceAdapter.
   void RequestRefreshFrame();
 
   // Used to DCHECK that we are called on the correct thread.
@@ skipping 14 matching lines @@
   // MediaStreamVideoWebRtcSink in order to allow it to request refresh frames.
   // See comments in media_stream_video_webrtc_sink.cc.
   base::WeakPtrFactory<MediaStreamVideoWebRtcSink> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamVideoWebRtcSink);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_