Revert of Enable -Winconsistent-missing-override flag.

webrtc/test/rtp_file_reader.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 113 matching lines @@
  public:
   RtpDumpReader() : file_(NULL) {}
   virtual ~RtpDumpReader() {
     if (file_ != NULL) {
       fclose(file_);
       file_ = NULL;
     }
   }
 
   bool Init(const std::string& filename,
-            const std::set<uint32_t>& ssrc_filter) override {
+            const std::set<uint32_t>& ssrc_filter) {
     file_ = fopen(filename.c_str(), "rb");
     if (file_ == NULL) {
       printf("ERROR: Can't open file: %s\n", filename.c_str());
       return false;
     }
 
     char firstline[kFirstLineLength + 1] = {0};
     if (fgets(firstline, kFirstLineLength, file_) == NULL) {
       DEBUG_LOG("ERROR: Can't read from file\n");
       return false;
@@ skipping 521 matching lines @@
   return reader;
 }
 
 RtpFileReader* RtpFileReader::Create(FileFormat format,
                                      const std::string& filename) {
   return RtpFileReader::Create(format, filename, std::set<uint32_t>());
 }
 
 }  // namespace test
 }  // namespace webrtc