Fix type punning error in (de)serializing audio frames.

webkit/media/crypto/ppapi/ffmpeg_cdm_audio_decoder.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/media/crypto/ppapi/ffmpeg_cdm_audio_decoder.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "media/base/buffers.h"
@@ skipping 315 matching lines @@
 base::TimeDelta FFmpegCdmAudioDecoder::GetNextOutputTimestamp() const {
   DCHECK(output_timestamp_base_ != media::kNoTimestamp());
   const double total_frames_decoded = total_frames_decoded_;
   const double decoded_us = (total_frames_decoded / samples_per_second_) *
       base::Time::kMicrosecondsPerSecond;
   return output_timestamp_base_ +
       base::TimeDelta::FromMicroseconds(decoded_us);
 }
 
 void FFmpegCdmAudioDecoder::SerializeInt64(int64 value) {
-  const uint8_t* ptr = reinterpret_cast<uint8_t*>(&value);
-  serialized_audio_frames_.insert(serialized_audio_frames_.end(),
-                                  ptr, ptr + sizeof(value));
+  int previous_size = serialized_audio_frames_.size();
+  serialized_audio_frames_.resize(previous_size + sizeof(value));
+  memcpy(&serialized_audio_frames_[0] + previous_size, &value, sizeof(value));
 }
 
 }  // namespace webkit_media