Replace SetCapturer and SetCaptureDevice by SetSource.

webrtc/media/base/videocapturer.h

Index: webrtc/media/base/videocapturer.h
diff --git a/webrtc/media/base/videocapturer.h b/webrtc/media/base/videocapturer.h
index ac2bee2b3092b85534dfd0dc2416cbfd12df5f7a..0acb8f4366e3dd819ac1ada3ed2627b471bfc861 100644
--- a/webrtc/media/base/videocapturer.h
+++ b/webrtc/media/base/videocapturer.h
@@ -218,14 +218,11 @@ class VideoCapturer : public sigslot::has_slots<>,
   // Takes ownership.
   void set_frame_factory(VideoFrameFactory* frame_factory);
 
-  // TODO(nisse): Rename function? Or pass the frame format before
-  // adaptation in some other way.
-  void GetStats(VideoFormat* last_captured_frame_format);
-
   // Implements VideoSourceInterface
   void AddOrUpdateSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink,
                        const rtc::VideoSinkWants& wants) override;
   void RemoveSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink) override;
+  void GetInfo(rtc::VideoSourceInfo *info) override;
 
  protected:
   // Signal the captured and possibly adapted frame to downstream consumers