Oilpan: Make SubtargetGeometry::m_node traceable.

Source/core/page/TouchAdjustment.cpp

 /*
  * 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
@@ skipping 28 matching lines @@
 #include "platform/text/TextBreakIterator.h"
 
 namespace WebCore {
 
 namespace TouchAdjustment {
 
 const float zeroTolerance = 1e-6f;
 
 // Class for remembering absolute quads of a target node and what node they represent.
 class SubtargetGeometry {
+    ALLOW_ONLY_INLINE_ALLOCATION();
 public:
     SubtargetGeometry(Node* node, const FloatQuad& quad)
         : m_node(node)
         , m_quad(quad)
     { }
+    void trace(Visitor* visitor) { visitor->trace(m_node); }
 
     Node* node() const { return m_node; }
     FloatQuad quad() const { return m_quad; }
     IntRect boundingBox() const { return m_quad.enclosingBoundingBox(); }
 
 private:
-    Node* m_node;
+    RawPtrWillBeMember<Node> m_node;
     FloatQuad m_quad;
 };
 
-typedef Vector<SubtargetGeometry> SubtargetGeometryList;
+}
+
+}
+
+WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(WebCore::TouchAdjustment::SubtargetGeometry)
+
+namespace WebCore {
+
+namespace TouchAdjustment {
+
+typedef WillBeHeapVector<SubtargetGeometry> SubtargetGeometryList;
 typedef bool (*NodeFilter)(Node*);
 typedef void (*AppendSubtargetsForNode)(Node*, SubtargetGeometryList&);
 typedef float (*DistanceFunction)(const IntPoint&, const IntRect&, const SubtargetGeometry&);
 
 // Takes non-const Node* because isContentEditable is a non-const function.
 bool nodeRespondsToTapGesture(Node* node)
 {
     if (node->willRespondToMouseClickEvents() || node->willRespondToMouseMoveEvents())
         return true;
     if (node->isElementNode()) {
@@ skipping 412 matching lines @@
 
 bool findBestZoomableArea(Node*& targetNode, IntRect& targetArea, const IntPoint& touchHotspot, const IntRect& touchArea, const WillBeHeapVector<RefPtrWillBeMember<Node> >& nodes)
 {
     IntPoint targetPoint;
     TouchAdjustment::SubtargetGeometryList subtargets;
     TouchAdjustment::compileZoomableSubtargets(nodes, subtargets);
     return TouchAdjustment::findNodeWithLowestDistanceMetric(targetNode, targetPoint, targetArea, touchHotspot, touchArea, subtargets, TouchAdjustment::zoomableIntersectionQuotient);
 }
 
 } // namespace WebCore