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

Source/core/paint/DeprecatedPaintLayerFragment.h

 /*
  * Copyright (C) 2003, 2009, 2012 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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 #ifndef DeprecatedPaintLayerFragment_h
 #define DeprecatedPaintLayerFragment_h
 
 #include "core/layout/ClipRect.h"
+#include "wtf/Allocator.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 struct DeprecatedPaintLayerFragment {
+    ALLOW_ONLY_INLINE_ALLOCATION();
 public:
     void setRects(const LayoutRect& bounds, const ClipRect& background, const ClipRect& foreground, const ClipRect& outline)
     {
         layerBounds = bounds;
         backgroundRect = background;
         foregroundRect = foreground;
         outlineRect = outline;
     }
 
     void moveBy(const LayoutPoint& offset)
@@ skipping 23 matching lines @@
     // Also unique to paginated fragments. An additional clip that applies to the layer. It is in layer-local
     // (physical) coordinates.
     LayoutRect paginationClip;
 };
 
 typedef Vector<DeprecatedPaintLayerFragment, 1> DeprecatedPaintLayerFragments;
 
 } // namespace blink
 
 #endif // DeprecatedPaintLayerFragment_h