Revert of Delete deprecated and transitional stuff related to video frame refactoring.

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
new file mode 100644
index 0000000000000000000000000000000000000000..f01c8129446ab39f82499c1093262be62c9ee0af
--- /dev/null
+++ b/webrtc/common_video/rotation.h
@@ -0,0 +1,18 @@
+/*
+ *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  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_
+
+#include "webrtc/api/video/video_rotation.h"
+
+#endif  // WEBRTC_COMMON_VIDEO_ROTATION_H_