Move frame_callback.h to common_video/include.

BUG=webrtc:4243
R=kjellander@webrtc.org, tommi@webrtc.org

Review URL: https://codereview.webrtc.org/1902543002

Cr-Commit-Position: refs/heads/master@{#12419}
diff --git a/webrtc/modules/video_coding/video_coding_impl.h b/webrtc/modules/video_coding/video_coding_impl.h
index 6675983..40352b0 100644
--- a/webrtc/modules/video_coding/video_coding_impl.h
+++ b/webrtc/modules/video_coding/video_coding_impl.h
@@ -16,10 +16,10 @@
 #include <memory>
 #include <vector>
 
-#include "webrtc/frame_callback.h"
 #include "webrtc/base/onetimeevent.h"
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/base/thread_checker.h"
+#include "webrtc/common_video/include/frame_callback.h"
 #include "webrtc/modules/video_coding/codec_database.h"
 #include "webrtc/modules/video_coding/frame_buffer.h"
 #include "webrtc/modules/video_coding/generic_decoder.h"