Replace SetCapturer and SetCaptureDevice by SetSource.

webrtc/pc/channel.cc

Index: webrtc/pc/channel.cc
diff --git a/webrtc/pc/channel.cc b/webrtc/pc/channel.cc
index 1d5d159d05fd786eafc6fb909fb96298d64e3c52..41a3d02eccd206445a3b43928274c2a7327d8a90 100644
--- a/webrtc/pc/channel.cc
+++ b/webrtc/pc/channel.cc
@@ -1673,9 +1673,11 @@ bool VideoChannel::AddScreencast(uint32_t ssrc, VideoCapturer* capturer) {
       &VideoChannel::AddScreencast_w, this, ssrc, capturer));
 }
 
-bool VideoChannel::SetCapturer(uint32_t ssrc, VideoCapturer* capturer) {
-  return InvokeOnWorker(Bind(&VideoMediaChannel::SetCapturer,
-                             media_channel(), ssrc, capturer));
+void VideoChannel::SetSource(
+    uint32_t ssrc,
+    rtc::VideoSourceInterface<cricket::VideoFrame>* source) {
+  worker_thread()->Invoke<void>(Bind(&VideoMediaChannel::SetSource,
+                                     media_channel(), ssrc, source));
 }
 
 bool VideoChannel::RemoveScreencast(uint32_t ssrc) {