[DevTools] Refactor CodeGenerator.

third_party/WebKit/Source/platform/inspector_protocol/BackendCallback_h.template

 // Copyright (c) 2016 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 BackendCallback_h
 #define BackendCallback_h
 
 //#include "ErrorSupport.h"
 //#include "Platform.h"
-#include "{{export_macro_include}}"
+#include "{{config.class_export.header}}"
 
 namespace blink {
 namespace protocol {
 
-class {{export_macro}} BackendCallback {
+class {{config.class_export.macro}} BackendCallback {
 public:
     virtual ~BackendCallback() { }
     virtual void sendFailure(const ErrorString&) = 0;
 };
 
 } // namespace platform
 } // namespace blink
 
 #endif // !defined(BackendCallback_h)