Switch to standard integer types in extensions/.

extensions/renderer/context_menus_custom_bindings.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 "extensions/renderer/context_menus_custom_bindings.h"
 
+#include <stdint.h>
+
 #include "base/bind.h"
 #include "content/public/renderer/render_thread.h"
 #include "extensions/common/extension_messages.h"
 #include "v8/include/v8.h"
 
 namespace {
 
 void GetNextContextMenuId(const v8::FunctionCallbackInfo<v8::Value>& args) {
   int context_menu_id = -1;
   content::RenderThread::Get()->Send(
       new ExtensionHostMsg_GenerateUniqueID(&context_menu_id));
   args.GetReturnValue().Set(static_cast<int32_t>(context_menu_id));
 }
 
 }  // namespace
 
 namespace extensions {
 
 ContextMenusCustomBindings::ContextMenusCustomBindings(ScriptContext* context)
     : ObjectBackedNativeHandler(context) {
   RouteFunction("GetNextContextMenuId", base::Bind(&GetNextContextMenuId));
 }
 
 }  // extensions