[part 1] Make classes and structures in modules/ fast-allocated.

Source/modules/compositorworker/CompositorWorkerMessagingProxy.h

 // Copyright 2015 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 CompositorWorkerMessagingProxy_h
 #define CompositorWorkerMessagingProxy_h
 
 #include "core/workers/WorkerMessagingProxy.h"
+#include "wtf/FastAllocBase.h"
 
 namespace blink {
 
 class CompositorWorkerMessagingProxy final : public WorkerMessagingProxy {
+    WTF_MAKE_FAST_ALLOCATED(CompositorWorkerMessagingProxy);
 public:
     explicit CompositorWorkerMessagingProxy(InProcessWorkerBase*);
 
 protected:
     ~CompositorWorkerMessagingProxy() override;
 
     PassRefPtr<WorkerThread> createWorkerThread(double originTime) override;
 };
 
 } // namespace blink
 
 #endif // CompositorWorkerMessagingProxy_h