Switch to standard integer types in mojo/.

mojo/edk/js/core.cc

 // 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.
 
 #include "mojo/edk/js/core.h"
 
+#include <stddef.h>
+#include <stdint.h>
+
 #include "base/bind.h"
 #include "base/logging.h"
 #include "gin/arguments.h"
 #include "gin/array_buffer.h"
 #include "gin/converter.h"
 #include "gin/dictionary.h"
 #include "gin/function_template.h"
 #include "gin/handle.h"
 #include "gin/object_template_builder.h"
 #include "gin/per_isolate_data.h"
@@ skipping 353 matching lines @@
             .Build();
 
     data->SetObjectTemplate(&g_wrapper_info, templ);
   }
 
   return templ->NewInstance();
 }
 
 }  // namespace edk
 }  // namespace mojo