Move LayoutObject to satellite NodeLayoutData that hangs from a Node.

third_party/WebKit/Source/core/dom/Node.cpp

Index: third_party/WebKit/Source/core/dom/Node.cpp
diff --git a/third_party/WebKit/Source/core/dom/Node.cpp b/third_party/WebKit/Source/core/dom/Node.cpp
index b91538efcfaa7eb5ae14c5775966265e5ac000d0..f3f9c2d37225625f889bfa1a08846f5f9d8df05f 100644
--- a/third_party/WebKit/Source/core/dom/Node.cpp
+++ b/third_party/WebKit/Source/core/dom/Node.cpp
@@ -303,17 +303,18 @@ Node::~Node() {
 
 NodeRareData* Node::RareData() const {
   SECURITY_DCHECK(HasRareData());
-  return static_cast<NodeRareData*>(data_.rare_data_);
+  return NodeRareData::Create();
 }
 
 NodeRareData& Node::EnsureRareData() {
   if (HasRareData())
     return *RareData();
 
-  if (IsElementNode())
-    data_.rare_data_ = ElementRareData::Create(data_.layout_object_);
-  else
-    data_.rare_data_ = NodeRareData::Create(data_.layout_object_);
+  if (IsElementNode()) {
+    data_.rare_data_ = ElementRareData::Create();
+  } else {
+    data_.rare_data_ = NodeRareData::Create();
+  }
 
   DCHECK(data_.rare_data_);
   SetFlag(kHasRareDataFlag);