WebRTC: Add compability header for video_coding refactoring.

webrtc/modules/video_coding/main/source/encoded_frame.h

 /*
  *  Copyright (c) 2011 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.
  */
 
 #ifndef WEBRTC_MODULES_VIDEO_CODING_ENCODED_FRAME_H_
 #define WEBRTC_MODULES_VIDEO_CODING_ENCODED_FRAME_H_
 
+#pragma message("WARNING: video_coding/main/source is DEPRECATED; use video_coding/ instead.")
+
 #include <vector>
 
 #include "webrtc/common_types.h"
 #include "webrtc/common_video/include/video_image.h"
 #include "webrtc/modules/include/module_common_types.h"
 #include "webrtc/modules/video_coding/include/video_codec_interface.h"
 #include "webrtc/modules/video_coding/include/video_coding_defines.h"
 
 namespace webrtc
 {
@@ skipping 94 matching lines @@
 
     // Video rotation is only set along with the last packet for each frame
     // (same as marker bit). This |_rotation_set| is only for debugging purpose
     // to ensure we don't set it twice for a frame.
     bool                          _rotation_set;
 };
 
 }  // namespace webrtc
 
 #endif // WEBRTC_MODULES_VIDEO_CODING_ENCODED_FRAME_H_