Make cricket::VideoCapturer implement VideoSourceInterface

webrtc/media/webrtc/webrtcvideoengine2.h

Index: webrtc/media/webrtc/webrtcvideoengine2.h
diff --git a/webrtc/media/webrtc/webrtcvideoengine2.h b/webrtc/media/webrtc/webrtcvideoengine2.h
index 440725376436528c7f07649044e12d5f0743ebeb..214efc007df51072a21d06df8b356f0c2798ef18 100644
--- a/webrtc/media/webrtc/webrtcvideoengine2.h
+++ b/webrtc/media/webrtc/webrtcvideoengine2.h
@@ -12,6 +12,7 @@
 #define WEBRTC_MEDIA_WEBRTC_WEBRTCVIDEOENGINE2_H_
 
 #include <map>
+#include <set>
 #include <string>
 #include <vector>
 
@@ -20,6 +21,7 @@
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/base/thread_checker.h"
 #include "webrtc/media/base/videosinkinterface.h"
+#include "webrtc/media/base/videosourceinterface.h"
 #include "webrtc/call.h"
 #include "webrtc/media/base/mediaengine.h"
 #include "webrtc/media/webrtc/webrtcvideochannelfactory.h"
@@ -221,7 +223,8 @@ class WebRtcVideoChannel2 : public VideoMediaChannel,
 
   // Wrapper for the sender part, this is where the capturer is connected and
   // frames are then converted from cricket frames to webrtc frames.
-  class WebRtcVideoSendStream : public sigslot::has_slots<> {
+  class WebRtcVideoSendStream
+      : public rtc::VideoSinkInterface<cricket::VideoFrame> {
    public:
     WebRtcVideoSendStream(
         webrtc::Call* call,
@@ -233,13 +236,13 @@ class WebRtcVideoChannel2 : public VideoMediaChannel,
         const rtc::Optional<VideoCodecSettings>& codec_settings,
         const std::vector<webrtc::RtpExtension>& rtp_extensions,
         const VideoSendParameters& send_params);
-    ~WebRtcVideoSendStream();
+    virtual ~WebRtcVideoSendStream();
 
     void SetOptions(const VideoOptions& options);
     // TODO(pbos): Move logic from SetOptions into this method.
     void SetSendParameters(const ChangedSendParameters& send_params);
 
-    void InputFrame(VideoCapturer* capturer, const VideoFrame* frame);
+    void OnFrame(const cricket::VideoFrame& frame) override;
     bool SetCapturer(VideoCapturer* capturer);
     void MuteStream(bool mute);
     bool DisconnectCapturer();
@@ -335,6 +338,7 @@ class WebRtcVideoChannel2 : public VideoMediaChannel,
     const std::vector<uint32_t> ssrcs_;
     const std::vector<SsrcGroup> ssrc_groups_;
     webrtc::Call* const call_;
+    rtc::VideoWants sink_wants_;
     WebRtcVideoEncoderFactory* const external_encoder_factory_
         GUARDED_BY(lock_);