Re-land: Initial skeleton of Accessibility Object Model Phase 1

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

Index: third_party/WebKit/Source/core/dom/ElementRareData.cpp
diff --git a/third_party/WebKit/Source/core/dom/ElementRareData.cpp b/third_party/WebKit/Source/core/dom/ElementRareData.cpp
index 18c8f634fea44399163caf5c89118e95adcc77e1..2e21eeef7b1450896d50cfa0c131e20e91da1c75 100644
--- a/third_party/WebKit/Source/core/dom/ElementRareData.cpp
+++ b/third_party/WebKit/Source/core/dom/ElementRareData.cpp
@@ -42,7 +42,7 @@ struct SameSizeAsElementRareData : NodeRareData {
   LayoutSize sizeForResizing;
   IntSize scrollOffset;
   void* pointers[2];
-  Member<void*> members[13];
+  Member<void*> members[14];
 };
 
 CSSStyleDeclaration& ElementRareData::ensureInlineCSSStyleDeclaration(
@@ -84,6 +84,7 @@ DEFINE_TRACE_AFTER_DISPATCH(ElementRareData) {
   visitor->trace(m_cssomWrapper);
   visitor->trace(m_cssomMapWrapper);
   visitor->trace(m_pseudoElementData);
+  visitor->trace(m_accessibleNode);
   visitor->trace(m_v0CustomElementDefinition);
   visitor->trace(m_customElementDefinition);
   visitor->trace(m_intersectionObserverData);
@@ -101,6 +102,7 @@ DEFINE_TRACE_WRAPPERS_AFTER_DISPATCH(ElementRareData) {
   visitor->traceWrappersWithManualWriteBarrier(m_attributeMap);
   visitor->traceWrappersWithManualWriteBarrier(m_dataset);
   visitor->traceWrappersWithManualWriteBarrier(m_classList);
+  visitor->traceWrappersWithManualWriteBarrier(m_accessibleNode);
   visitor->traceWrappersWithManualWriteBarrier(m_intersectionObserverData);
   NodeRareData::traceWrappersAfterDispatch(visitor);
 }