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

Source/modules/filesystem/FileSystemClient.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef FileSystemClient_h
 #define FileSystemClient_h
 
 #include "modules/ModulesExport.h"
 #include "platform/FileSystemType.h"
+#include "wtf/FastAllocBase.h"
 #include "wtf/Forward.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 class ExecutionContext;
 class LocalFrame;
 class ContentSettingCallbacks;
 class WorkerClients;
 
 class FileSystemClient {
+    WTF_MAKE_FAST_ALLOCATED(FileSystemClient);
     WTF_MAKE_NONCOPYABLE(FileSystemClient);
 public:
     FileSystemClient() { }
     virtual ~FileSystemClient() { }
 
     virtual bool requestFileSystemAccessSync(ExecutionContext*) = 0;
     virtual void requestFileSystemAccessAsync(ExecutionContext*, PassOwnPtr<ContentSettingCallbacks>) = 0;
 };
 
 MODULES_EXPORT void provideLocalFileSystemTo(LocalFrame&, PassOwnPtr<FileSystemClient>);
 
 MODULES_EXPORT void provideLocalFileSystemToWorker(WorkerClients*, PassOwnPtr<FileSystemClient>);
 
 } // namespace blink
 
 #endif // FileSystemClient_h