Show ancestor hierarchy in accessibility panel

third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.h

Index: third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.h
diff --git a/third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.h b/third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.h
index 6a808c847ea4321a0e9bb3019d0d7580617f33f4..d70fd2b523af723ce23629fe55a745fc3ba01b3c 100644
--- a/third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.h
+++ b/third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.h
@@ -11,9 +11,13 @@
 
 namespace blink {
 
+class AXObjectCache;
 class InspectorDOMAgent;
+class LocalFrame;
 class Page;
 
+using CacheMap = HeapHashMap<String, Member<AXObjectCache>>;
+
 class MODULES_EXPORT InspectorAccessibilityAgent : public InspectorBaseAgent<protocol::Accessibility::Metainfo> {
     WTF_MAKE_NONCOPYABLE(InspectorAccessibilityAgent);
 public:
@@ -23,10 +27,13 @@ public:
     DECLARE_VIRTUAL_TRACE();
 
     // Protocol methods.
-    void getAXNode(ErrorString*, int nodeId, Maybe<protocol::Accessibility::AXNode>* accessibilityNode) override;
+    void getAXNodeForDOMNode(ErrorString*, int domNodeId, bool fetchAncestors, Maybe<protocol::Array<protocol::Accessibility::AXNode>>* nodes) override;
 
 private:
+    void discardFrontendBindings();
+
     Member<Page> m_page;
+    CacheMap m_frameToAXObjectCacheMap;
     Member<InspectorDOMAgent> m_domAgent;
 };