Make classes and structures in web fast-allocated.

Source/web/DragClientImpl.h

 /*
  * Copyright (C) 2009 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 DragClientImpl_h
 #define DragClientImpl_h
 
 #include "core/page/DragActions.h"
 #include "core/page/DragClient.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 class WebViewImpl;
 
 class DragClientImpl final : public DragClient {
+    DISALLOW_ALLOCATION();
 public:
     explicit DragClientImpl(WebViewImpl* webView) : m_webView(webView) { }
 
     DragDestinationAction actionMaskForDrag(DragData*) override;
     virtual void startDrag(
         DragImage*,
         const IntPoint& dragImageOrigin,
         const IntPoint& eventPos,
         DataTransfer*,
         LocalFrame*,
         bool isLinkDrag = false) override;
 
 private:
     WebViewImpl* m_webView;
 };
 
 } // namespace blink
 
 #endif