[part 2] Make classes and structures in modules fast-allocated.

Source/modules/serviceworkers/testing/InternalsServiceWorker.h

 // 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.
 
 #ifndef InternalsServiceWorker_h
 #define InternalsServiceWorker_h
 
+#include "wtf/Allocator.h"
+
 namespace blink {
 
 class Internals;
 class ServiceWorker;
 
 class InternalsServiceWorker {
+    STATIC_ONLY(InternalsServiceWorker);
 public:
     static void terminateServiceWorker(Internals&, ServiceWorker*);
 };
 
 } // namespace blink
 
 #endif // InternalsServiceWorker_h