Make classes and structures in web fast-allocated.

Source/web/UserMediaClientImpl.h

 /*
  * Copyright (C) 2011 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 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * 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 UserMediaClientImpl_h
 #define UserMediaClientImpl_h
 
 #include "modules/mediastream/UserMediaClient.h"
+#include "wtf/Allocator.h"
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 class MediaDevicesRequest;
 class UserMediaRequest;
 class WebUserMediaClient;
 class WebLocalFrameImpl;
 
 class UserMediaClientImpl final : public UserMediaClient {
+    DISALLOW_ALLOCATION();
 public:
     explicit UserMediaClientImpl(WebLocalFrameImpl*);
 
     // UserMediaClient ----------------------------------------------
     void requestUserMedia(UserMediaRequest*) override;
     void cancelUserMediaRequest(UserMediaRequest*) override;
     void requestMediaDevices(MediaDevicesRequest*) override;
     void cancelMediaDevicesRequest(MediaDevicesRequest*) override;
     void requestSources(MediaStreamTrackSourcesRequest*) override;
 
 private:
     UserMediaClientImpl();
 
     WebUserMediaClient* m_client;
 };
 
 } // namespace blink
 
 #endif // UserMediaClientImpl_h