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

webrtc/modules/rtp_rtcp/source/rtp_format_h264.cc

 /*
  *  Copyright (c) 2014 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 556 matching lines @@
           nalu.pps_id = pps_id;
           nalu.sps_id = sps_id;
         } else {
           LOG(LS_WARNING)
               << "Failed to parse PPS id and SPS id from PPS slice.";
         }
         break;
       }
       case H264::NaluType::kIdr:
         parsed_payload->frame_type = kVideoFrameKey;
-        RTC_FALLTHROUGH();
+        FALLTHROUGH();
       case H264::NaluType::kSlice: {
         rtc::Optional<uint32_t> pps_id = PpsParser::ParsePpsIdFromSlice(
             &payload_data[start_offset], end_offset - start_offset);
         if (pps_id) {
           nalu.pps_id = *pps_id;
         } else {
           LOG(LS_WARNING) << "Failed to parse PPS id from slice of type: "
                           << static_cast<int>(nalu.type);
         }
         break;
@@ skipping 71 matching lines @@
   h264->packetization_type = kH264FuA;
   h264->nalu_type = original_nal_type;
   if (first_fragment) {
     h264->nalus[h264->nalus_length] = nalu;
     h264->nalus_length = 1;
   }
   return true;
 }
 
 }  // namespace webrtc