Replace RenderArena with PartitionAlloc.

Source/core/dom/Node.cpp

Index: Source/core/dom/Node.cpp
diff --git a/Source/core/dom/Node.cpp b/Source/core/dom/Node.cpp
index 2e20859f1ca9aad7660bf6303da674e1625be617..9ea29283f2974012d867906e8e5678b9107b18c3 100644
--- a/Source/core/dom/Node.cpp
+++ b/Source/core/dom/Node.cpp
@@ -104,6 +104,7 @@
 #include "core/page/Page.h"
 #include "core/page/Settings.h"
 #include "core/platform/Logging.h"
+#include "core/platform/Partitions.h"
 #include "core/platform/PlatformMouseEvent.h"
 #include "core/platform/PlatformWheelEvent.h"
 #include "core/rendering/RenderBlock.h"
@@ -112,7 +113,6 @@
 #include "core/rendering/RenderView.h"
 #include "core/storage/StorageEvent.h"
 #include "wtf/HashSet.h"
-#include "wtf/PartitionAlloc.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefCountedLeakCounter.h"
 #include "wtf/UnusedParam.h"
@@ -131,11 +131,9 @@ namespace WebCore {
 using namespace HTMLNames;
 
 #if ENABLE(PARTITION_ALLOC)
-static PartitionRoot root;
-
 void* Node::operator new(size_t size)
 {
-    return partitionAlloc(&root, size);
+    return partitionAlloc(Partitions::getObjectModelPartition(), size);
 }
 
 void Node::operator delete(void* ptr)
@@ -144,20 +142,6 @@ void Node::operator delete(void* ptr)
 }
 #endif // ENABLE(PARTITION_ALLOC)
 
-void Node::init()
-{
-#if ENABLE(PARTITION_ALLOC)
-    partitionAllocInit(&root);
-#endif
-}
-
-void Node::shutdown()
-{
-#if ENABLE(PARTITION_ALLOC)
-    partitionAllocShutdown(&root);
-#endif
-}
-
 bool Node::isSupported(const String& feature, const String& version)
 {
     return DOMImplementation::hasFeature(feature, version);