Switch to standard integer types in extensions/.

extensions/renderer/id_generator_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/id_generator_custom_bindings.h"
 
+#include <stdint.h>
+
 #include "base/bind.h"
 
 namespace extensions {
 
 IdGeneratorCustomBindings::IdGeneratorCustomBindings(ScriptContext* context)
     : ObjectBackedNativeHandler(context) {
   RouteFunction("GetNextId",
                 base::Bind(&IdGeneratorCustomBindings::GetNextId,
                            base::Unretained(this)));
 }
 
 void IdGeneratorCustomBindings::GetNextId(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   static int32_t next_id = 0;
   ++next_id;
   // Make sure 0 is never returned because some APIs (particularly WebRequest)
   // have special meaning for 0 IDs.
   if (next_id == 0)
     next_id = 1;
   args.GetReturnValue().Set(next_id);
 }
 
 }  // namespace extensions