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

webrtc/common_video/rotation.h

Index: webrtc/common_video/rotation.h
diff --git a/webrtc/common_video/rotation.h b/webrtc/common_video/rotation.h
index 46a9ecc5eab132b21587fd61a0dd778857addad0..f01c8129446ab39f82499c1093262be62c9ee0af 100644
--- a/webrtc/common_video/rotation.h
+++ b/webrtc/common_video/rotation.h
@@ -8,19 +8,11 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+// TODO(nisse): Delete this file, once downstream code is updated.
+
 #ifndef WEBRTC_COMMON_VIDEO_ROTATION_H_
 #define WEBRTC_COMMON_VIDEO_ROTATION_H_
 
-namespace webrtc {
-
-// enum for clockwise rotation.
-enum VideoRotation {
-  kVideoRotation_0 = 0,
-  kVideoRotation_90 = 90,
-  kVideoRotation_180 = 180,
-  kVideoRotation_270 = 270
-};
-
-}  // namespace webrtc
+#include "webrtc/api/video/video_rotation.h"
 
 #endif  // WEBRTC_COMMON_VIDEO_ROTATION_H_