Storage of ComputedStyle separate from LayoutObject.

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 ffb377480adadff7c42dd82b2acc81f345dfbd2f..95e4076049dbc380daa5bca4d817879938295168 100644
--- a/third_party/WebKit/Source/core/dom/Node.cpp
+++ b/third_party/WebKit/Source/core/dom/Node.cpp
@@ -264,6 +264,8 @@ Node::~Node()
     // this condition (we cannot directly access it here.)
     RELEASE_ASSERT(hasRareData() || !layoutObject());
     InstanceCounters::decrementCounter(InstanceCounters::NodeCounter);
+    if (!hasRareData() && !hasLayoutObject() && m_data.m_computedStyle)

[esprehn, 2016/08/05 21:26:26]

!hasLayoutObject() doesn't make sense here, you can't have a LayoutObject when
~Node runs, you'd fail the RELEASE_ASSERT above and crash

[Bugs Nash, 2016/08/12 03:55:33]

Done

+        m_data.m_computedStyle->deref();
 }
 
 NodeRareData* Node::rareData() const
@@ -278,9 +280,9 @@ NodeRareData& Node::ensureRareData()
         return *rareData();
 
     if (isElementNode())
-        m_data.m_rareData = ElementRareData::create(m_data.m_layoutObject);
+        m_data.m_rareData = ElementRareData::create(layoutObject());
     else
-        m_data.m_rareData = NodeRareData::create(m_data.m_layoutObject);
+        m_data.m_rareData = NodeRareData::create(layoutObject());
 
     DCHECK(m_data.m_rareData);