Make classes and structures in core/layout fast-allocated.

Source/core/layout/HitTestRequest.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
  * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
 */
 
 #ifndef HitTestRequest_h
 #define HitTestRequest_h
 
+#include "wtf/Allocator.h"
 #include "wtf/Assertions.h"
 
 namespace blink {
 
 class HitTestRequest {
+    DISALLOW_ALLOCATION();
 public:
     enum RequestType {
         ReadOnly = 1 << 1,
         Active = 1 << 2,
         Move = 1 << 3,
         Release = 1 << 4,
         IgnoreClipping = 1 << 5,
         SVGClipContent = 1 << 6,
         TouchEvent = 1 << 7,
         AllowChildFrameContent = 1 << 8,
@@ skipping 46 matching lines @@
         return (m_requestType | CacheabilityBits) == (value.m_requestType | CacheabilityBits);
     }
 
 private:
     HitTestRequestType m_requestType;
 };
 
 } // namespace blink
 
 #endif // HitTestRequest_h