Switch to standard integer types in mojo/.

mojo/edk/system/data_pipe.cc

 // Copyright 2015 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 "mojo/edk/system/data_pipe.h"
 
+#include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 
 #include "mojo/edk/system/configuration.h"
 #include "mojo/edk/system/options_validation.h"
 #include "mojo/edk/system/raw_channel.h"
 #include "mojo/edk/system/transport_data.h"
 
 namespace mojo {
 namespace edk {
 
@@ skipping 178 matching lines @@
     }
   }
 
   size -= sizeof(SerializedDataPipeHandleDispatcher);
 
   return ScopedPlatformHandle(platform_handle);
 }
 
 }  // namespace edk
 }  // namespace mojo