Switch to standard integer types in ppapi/.

ppapi/proxy/message_handler.h

 // Copyright 2014 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.
 
 #ifndef PPAPI_PROXY_MESSAGE_HANDLER_H_
 #define PPAPI_PROXY_MESSAGE_HANDLER_H_
 
+#include <stdint.h>
+
+#include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/ppp_message_handler.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 
 namespace IPC {
 class Message;
 }
 
@@ skipping 47 matching lines @@
   void* user_data_;
   scoped_refptr<MessageLoopResource> message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageHandler);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_MESSAGE_HANDLER_H_