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

webrtc/modules/video_coding/jitter_buffer.cc

 /*
  *  Copyright (c) 2012 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.
  */
 #include "webrtc/modules/video_coding/jitter_buffer.h"
@@ skipping 731 matching lines @@
     }
     case kCompleteSession: {
       if (previous_state != kStateDecodable &&
           previous_state != kStateComplete) {
         CountFrame(*frame);
         if (continuous) {
           // Signal that we have a complete session.
           frame_event_->Set();
         }
       }
-      RTC_FALLTHROUGH();
+      FALLTHROUGH();
     }
     // Note: There is no break here - continuing to kDecodableSession.
     case kDecodableSession: {
       *retransmitted = (frame->GetNackCount() > 0);
       if (continuous) {
         decodable_frames_.InsertFrame(frame);
         FindAndInsertContinuousFrames(*frame);
       } else {
         incomplete_frames_.InsertFrame(frame);
         // If NACKs are enabled, keyframes are triggered by |GetNackList|.
@@ skipping 535 matching lines @@
   }
   return true;
 }
 
 void VCMJitterBuffer::RecycleFrameBuffer(VCMFrameBuffer* frame) {
   frame->Reset();
   free_frames_.push_back(frame);
 }
 
 }  // namespace webrtc