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

Source/core/paint/DeprecatedPaintLayerStackingNodeIterator.h

 /*
  * Copyright (C) 2013 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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * 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 DeprecatedPaintLayerStackingNodeIterator_h
 #define DeprecatedPaintLayerStackingNodeIterator_h
 
+#include "wtf/Allocator.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 enum ChildrenIteration {
     NegativeZOrderChildren = 1,
     NormalFlowChildren = 1 << 1,
     PositiveZOrderChildren = 1 << 2,
     AllChildren = NegativeZOrderChildren | NormalFlowChildren | PositiveZOrderChildren
 };
 
 class DeprecatedPaintLayerStackingNode;
 class DeprecatedPaintLayer;
 
 // This iterator walks the DeprecatedPaintLayerStackingNode lists in the following order:
 // NegativeZOrderChildren -> NormalFlowChildren -> PositiveZOrderChildren.
 class DeprecatedPaintLayerStackingNodeIterator {
+    STACK_ALLOCATED();
     WTF_MAKE_NONCOPYABLE(DeprecatedPaintLayerStackingNodeIterator);
 public:
     DeprecatedPaintLayerStackingNodeIterator(const DeprecatedPaintLayerStackingNode& root, unsigned whichChildren);
 
     DeprecatedPaintLayerStackingNode* next();
 
 private:
     const DeprecatedPaintLayerStackingNode& m_root;
     unsigned m_remainingChildren;
     unsigned m_index;
     DeprecatedPaintLayer* m_currentNormalFlowChild;
 };
 
 // This iterator is similar to DeprecatedPaintLayerStackingNodeIterator but it walks the lists in reverse order
 // (from the last item to the first one).
 class DeprecatedPaintLayerStackingNodeReverseIterator {
+    STACK_ALLOCATED();
     WTF_MAKE_NONCOPYABLE(DeprecatedPaintLayerStackingNodeReverseIterator);
 public:
     DeprecatedPaintLayerStackingNodeReverseIterator(const DeprecatedPaintLayerStackingNode& root, unsigned whichChildren)
         : m_root(root)
         , m_remainingChildren(whichChildren)
     {
         setIndexToLastItem();
     }
 
     DeprecatedPaintLayerStackingNode* next();
 
 private:
     void setIndexToLastItem();
 
     const DeprecatedPaintLayerStackingNode& m_root;
     unsigned m_remainingChildren;
     int m_index;
     DeprecatedPaintLayer* m_currentNormalFlowChild;
 };
 
 } // namespace blink
 
 #endif // DeprecatedPaintLayerStackingNodeIterator_h