Revert of Remove typedefs.h from webrtc/ root (part 1)

webrtc/modules/video_coding/rtp_frame_reference_finder.cc

 /*
  *  Copyright (c) 2016 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.
  */
 
@@ skipping 53 matching lines @@
          frame_it != stashed_frames_.end();) {
       FrameDecision decision = ManageFrameInternal(frame_it->get());
 
       switch (decision) {
         case kStash:
           ++frame_it;
           break;
         case kHandOff:
           complete_frame = true;
           frame_callback_->OnCompleteFrame(std::move(*frame_it));
-          RTC_FALLTHROUGH();
+          FALLTHROUGH();
         case kDrop:
           frame_it = stashed_frames_.erase(frame_it);
       }
     }
   } while (complete_frame);
 }
 
 RtpFrameReferenceFinder::FrameDecision
 RtpFrameReferenceFinder::ManageFrameInternal(RtpFrameObject* frame) {
   switch (frame->codec_type()) {
@@ skipping 505 matching lines @@
 }
 
 void RtpFrameReferenceFinder::UnwrapPictureIds(RtpFrameObject* frame) {
   for (size_t i = 0; i < frame->num_references; ++i)
     frame->references[i] = unwrapper_.Unwrap(frame->references[i]);
   frame->picture_id = unwrapper_.Unwrap(frame->picture_id);
 }
 
 }  // namespace video_coding
 }  // namespace webrtc