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

Source/modules/fetch/CompositeDataConsumerHandle.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 CompositeDataConsumerHandle_h
 #define CompositeDataConsumerHandle_h
 
 #include "modules/ModulesExport.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebDataConsumerHandle.h"
+#include "wtf/Allocator.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class WebThread;
 
 // This is a utility class to construct a composite data consumer handle. It
 // owns a web data consumer handle and delegates methods. A user can update
 // the handle by using |update| method.
 class MODULES_EXPORT CompositeDataConsumerHandle final : public WebDataConsumerHandle {
     WTF_MAKE_NONCOPYABLE(CompositeDataConsumerHandle);
+    WTF_MAKE_FAST_ALLOCATED(CompositeDataConsumerHandle);
     class Context;
 public:
     // An Updater is bound to the creator thread.
     class MODULES_EXPORT Updater final : public GarbageCollectedFinalized<Updater> {
     public:
         explicit Updater(PassRefPtr<Context>);
         ~Updater();
 
         // |handle| must not be null and must not be locked.
         void update(PassOwnPtr<WebDataConsumerHandle> /* handle */);
@@ skipping 27 matching lines @@
     const char* debugName() const override { return "CompositeDataConsumerHandle"; }
 
     CompositeDataConsumerHandle(PassOwnPtr<WebDataConsumerHandle>, Updater**);
 
     RefPtr<Context> m_context;
 };
 
 } // namespace blink
 
 #endif // CompositeDataConsumerHandle_h