Refactor the Heap into ThreadHeap to prepare for per thread heaps

third_party/WebKit/Source/core/svg/SVGElementRareData.cpp

Index: third_party/WebKit/Source/core/svg/SVGElementRareData.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGElementRareData.cpp b/third_party/WebKit/Source/core/svg/SVGElementRareData.cpp
index 6dcd4470dc6a51b95471efd68b0a369e15506585..6600fca52f0e64af0277c3db4b8d0ea9e0fb92aa 100644
--- a/third_party/WebKit/Source/core/svg/SVGElementRareData.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGElementRareData.cpp
@@ -49,10 +49,10 @@ void SVGElementRareData::processWeakMembers(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
         ASSERT(m_owner);
-        if (!Heap::isHeapObjectAlive(m_cursorElement))
+        if (!ThreadHeap::isHeapObjectAlive(m_cursorElement))
             m_cursorElement = nullptr;
 
-        if (!Heap::isHeapObjectAlive(m_cursorImageValue)) {
+        if (!ThreadHeap::isHeapObjectAlive(m_cursorImageValue)) {
             // The owning SVGElement is still alive and if it is pointing to an SVGCursorElement
             // we unregister it when the CSSCursorImageValue dies.
             if (m_cursorElement) {
@@ -61,8 +61,8 @@ void SVGElementRareData::processWeakMembers(Visitor* visitor)
             }
             m_cursorImageValue = nullptr;
         }
-        ASSERT(!m_cursorElement || Heap::isHeapObjectAlive(m_cursorElement));
-        ASSERT(!m_cursorImageValue || Heap::isHeapObjectAlive(m_cursorImageValue));
+        ASSERT(!m_cursorElement || ThreadHeap::isHeapObjectAlive(m_cursorElement));
+        ASSERT(!m_cursorImageValue || ThreadHeap::isHeapObjectAlive(m_cursorImageValue));
 #endif
 }