Revert of Rename Heap to ThreadHeap

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 24a2bae25b1cbfb20b14ece9c0e68cc1163a451e..f30f5b53900ba4db5171b8384b7b8380f6d45d1a 100644
--- a/third_party/WebKit/Source/core/svg/SVGElementRareData.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGElementRareData.cpp
@@ -46,10 +46,10 @@
 void SVGElementRareData::processWeakMembers(Visitor* visitor)
 {
     ASSERT(m_owner);
-    if (!ThreadHeap::isHeapObjectAlive(m_cursorElement))
+    if (!Heap::isHeapObjectAlive(m_cursorElement))
         m_cursorElement = nullptr;
 
-    if (!ThreadHeap::isHeapObjectAlive(m_cursorImageValue)) {
+    if (!Heap::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) {
@@ -58,8 +58,8 @@
         }
         m_cursorImageValue = nullptr;
     }
-    ASSERT(!m_cursorElement || ThreadHeap::isHeapObjectAlive(m_cursorElement));
-    ASSERT(!m_cursorImageValue || ThreadHeap::isHeapObjectAlive(m_cursorImageValue));
+    ASSERT(!m_cursorElement || Heap::isHeapObjectAlive(m_cursorElement));
+    ASSERT(!m_cursorImageValue || Heap::isHeapObjectAlive(m_cursorImageValue));
 }
 
 AffineTransform* SVGElementRareData::animateMotionTransform()