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 033202924d341f1aded0668ac93130b185103284..7a7be26511abdccbc9d782e228f9787eb4b0ce5e 100644
--- a/webkit/media/crypto/ppapi/clear_key_cdm.cc
+++ b/webkit/media/crypto/ppapi/clear_key_cdm.cc
@@ -485,10 +485,12 @@ int ClearKeyCdm::GenerateFakeAudioFramesFromDuration(
 
   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());
+  uint8_t* data = audio_frames->buffer()->data();
 
-  *(data++) = timestamp;
-  *(data++) = frame_size;
+  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);