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

webkit/media/crypto/ppapi/clear_key_cdm.cc

Index: webkit/media/crypto/ppapi/clear_key_cdm.cc
diff --git a/webkit/media/crypto/ppapi/clear_key_cdm.cc b/webkit/media/crypto/ppapi/clear_key_cdm.cc
index dd6a3dc3427cb8d5d342454749d7d7e84c3e7710..17a5f48af98fbb52c02e273086379c4332ff6ae0 100644
--- a/webkit/media/crypto/ppapi/clear_key_cdm.cc
+++ b/webkit/media/crypto/ppapi/clear_key_cdm.cc
@@ -492,9 +492,12 @@ void ClearKeyCdm::GenerateFakeAudioFrames(cdm::AudioFrames* audio_frames) {
 
   const int kHeaderSize = sizeof(timestamp) + sizeof(frame_size);
   audio_frames->set_buffer(allocator_->Allocate(kHeaderSize + frame_size));
-  int64* data = reinterpret_cast<int64*>(audio_frames->buffer()->data());
-  *(data++) = timestamp;
-  *(data++) = frame_size;
+  uint8_t* data = audio_frames->buffer()->data();
+
+  memcpy(data, &timestamp, sizeof(timestamp));
+  data += sizeof(timestamp);
+  memcpy(data, &frame_size, sizeof(frame_size));
+  data += sizeof(frame_size);
   // You won't hear anything because we have all zeros here. But the video
   // should play just fine!
   memset(data, 0, frame_size);