Move custom element definitions into ElementRareData

Source/core/dom/Element.cpp

Index: Source/core/dom/Element.cpp
diff --git a/Source/core/dom/Element.cpp b/Source/core/dom/Element.cpp
index dc3066d7e1756d94713b403295dd8cfd205745fd..64ffccbb1f09028f001688cc46a6cbfa598ad079 100644
--- a/Source/core/dom/Element.cpp
+++ b/Source/core/dom/Element.cpp
@@ -1735,6 +1735,20 @@ void Element::setNeedsAnimationStyleRecalc()
     setAnimationStyleChange(true);
 }
 
+void Element::setCustomElementDefinition(PassRefPtr<CustomElementDefinition> definition)
+{
+    if (!hasRareData() && !definition)
+        return;
+    ensureElementRareData().setCustomElementDefinition(definition);

[dominicc (has gone to gerrit), 2014/03/03 04:32:23]

We should assert that there isn't a definition already here.

+}
+
+CustomElementDefinition* Element::customElementDefinition() const
+{
+    if (hasRareData())
+        return elementRareData()->customElementDefinition();
+    return 0;
+}
+
 PassRefPtr<ShadowRoot> Element::createShadowRoot(ExceptionState& exceptionState)
 {
     if (alwaysCreateUserAgentShadowRoot())