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

webkit/plugins/ppapi/ppapi_plugin_instance.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/plugins/ppapi/ppapi_plugin_instance.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 400 matching lines @@
   int bytes_left = mapper.size();
 
   do {
     int64 timestamp = 0;
     int64 frame_size = -1;
     const int kHeaderSize = sizeof(timestamp) + sizeof(frame_size);
 
     if (bytes_left < kHeaderSize)
       return false;
 
-    timestamp = *(reinterpret_cast<const int64*>(cur));
+    memcpy(&timestamp, cur, sizeof(timestamp));
     cur += sizeof(timestamp);
     bytes_left -= sizeof(timestamp);
 
-    frame_size = *(reinterpret_cast<const int64*>(cur));
+    memcpy(&frame_size, cur, sizeof(frame_size));
     cur += sizeof(frame_size);
     bytes_left -= sizeof(frame_size);
 
     // We should *not* have empty frame in the list.
     if (frame_size <= 0 || bytes_left < frame_size)
       return false;
 
     scoped_refptr<media::DataBuffer> frame(new media::DataBuffer(cur,
                                                                  frame_size));
     frame->SetTimestamp(base::TimeDelta::FromMicroseconds(timestamp));
@@ skipping 2772 matching lines @@
   screen_size_for_fullscreen_ = gfx::Size();
   WebElement element = container_->element();
   element.setAttribute(WebString::fromUTF8(kWidth), width_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kHeight), height_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kBorder), border_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kStyle), style_before_fullscreen_);
 }
 
 }  // namespace ppapi
 }  // namespace webkit