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

Source/core/paint/DeprecatedPaintLayerPaintingInfo.h

 /*
  * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
@@ skipping 29 matching lines @@
  * other provisions required by the MPL or the GPL, as the case may be.
  * If you do not delete the provisions above, a recipient may use your
  * version of this file under any of the LGPL, the MPL or the GPL.
  */
 
 #ifndef DeprecatedPaintLayerPaintingInfo_h
 #define DeprecatedPaintLayerPaintingInfo_h
 
 #include "core/paint/PaintPhase.h"
 #include "platform/geometry/LayoutRect.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 class DeprecatedPaintLayer;
 class LayoutObject;
 
 enum PaintLayerFlag {
     PaintLayerNoFlag = 0,
     PaintLayerHaveTransparency = 1,
     PaintLayerAppliedTransform = 1 << 1,
     PaintLayerUncachedClipRects = 1 << 2,
     PaintLayerPaintingReflection = 1 << 3,
     PaintLayerPaintingOverlayScrollbars = 1 << 4,
     PaintLayerPaintingCompositingBackgroundPhase = 1 << 5,
     PaintLayerPaintingCompositingForegroundPhase = 1 << 6,
     PaintLayerPaintingCompositingMaskPhase = 1 << 7,
     PaintLayerPaintingCompositingScrollingPhase = 1 << 8,
     PaintLayerPaintingOverflowContents = 1 << 9,
     PaintLayerPaintingRootBackgroundOnly = 1 << 10,
     PaintLayerPaintingSkipRootBackground = 1 << 11,
     PaintLayerPaintingChildClippingMaskPhase = 1 << 12,
     PaintLayerPaintingRenderingClipPathAsMask = 1 << 13,
     PaintLayerPaintingCompositingAllPhases = (PaintLayerPaintingCompositingBackgroundPhase | PaintLayerPaintingCompositingForegroundPhase | PaintLayerPaintingCompositingMaskPhase)
 };
 
 typedef unsigned PaintLayerFlags;
 
 struct DeprecatedPaintLayerPaintingInfo {
+    STACK_ALLOCATED();
     DeprecatedPaintLayerPaintingInfo(DeprecatedPaintLayer* inRootLayer, const LayoutRect& inDirtyRect,
         GlobalPaintFlags globalPaintFlags, const LayoutSize& inSubPixelAccumulation,
         LayoutObject* inPaintingRoot = 0)
         : rootLayer(inRootLayer)
         , paintingRoot(inPaintingRoot)
         , paintDirtyRect(inDirtyRect)
         , subPixelAccumulation(inSubPixelAccumulation)
         , clipToDirtyRect(true)
         , m_globalPaintFlags(globalPaintFlags)
     { }
 
     GlobalPaintFlags globalPaintFlags() const { return m_globalPaintFlags; }
 
     // TODO(jchaffraix): We should encapsulate all these fields.
     DeprecatedPaintLayer* rootLayer;
     LayoutObject* paintingRoot; // only paint descendants of this object
     LayoutRect paintDirtyRect; // relative to rootLayer;
     LayoutSize subPixelAccumulation;
     IntSize scrollOffsetAccumulation;
     bool clipToDirtyRect;
 
 private:
     const GlobalPaintFlags m_globalPaintFlags;
 };
 
 } // namespace blink
 
 #endif // DeprecatedPaintLayerPaintingInfo_h