Move VideoFrame and related declarations to webrtc/api/video.

webrtc/test/testsupport/frame_reader.cc

Index: webrtc/test/testsupport/frame_reader.cc
diff --git a/webrtc/test/testsupport/frame_reader.cc b/webrtc/test/testsupport/frame_reader.cc
index dc0d822e9be0e893e9499fce85cf5e371872a142..2593afd8c8cb002137fe4216f36d777a5fe19a5d 100644
--- a/webrtc/test/testsupport/frame_reader.cc
+++ b/webrtc/test/testsupport/frame_reader.cc
@@ -12,9 +12,9 @@
 
 #include <assert.h>
 
+#include "webrtc/api/video/i420_buffer.h"
 #include "webrtc/test/frame_utils.h"
 #include "webrtc/test/testsupport/fileutils.h"
-#include "webrtc/common_video/include/video_frame_buffer.h"
 
 namespace webrtc {
 namespace test {