Revert of Delete all use of cricket::VideoFrame and cricket::WebRtcVideoFrame.

webrtc/pc/channel.cc

Index: webrtc/pc/channel.cc
diff --git a/webrtc/pc/channel.cc b/webrtc/pc/channel.cc
index 92945fd92b6d4a21c953b23f680aee5040ba589d..d9eb9b6facc7e5d3bedef03b9cbafc892b2c4512 100644
--- a/webrtc/pc/channel.cc
+++ b/webrtc/pc/channel.cc
@@ -1865,7 +1865,7 @@
 }
 
 bool VideoChannel::SetSink(uint32_t ssrc,
-                           rtc::VideoSinkInterface<webrtc::VideoFrame>* sink) {
+                           rtc::VideoSinkInterface<VideoFrame>* sink) {
   worker_thread()->Invoke<void>(
       RTC_FROM_HERE,
       Bind(&VideoMediaChannel::SetSink, media_channel(), ssrc, sink));
@@ -1876,7 +1876,7 @@
     uint32_t ssrc,
     bool mute,
     const VideoOptions* options,
-    rtc::VideoSourceInterface<webrtc::VideoFrame>* source) {
+    rtc::VideoSourceInterface<cricket::VideoFrame>* source) {
   return InvokeOnWorker(RTC_FROM_HERE,
                         Bind(&VideoMediaChannel::SetVideoSend, media_channel(),
                              ssrc, mute, options, source));