Remove remaining callers of deprecatedShadowAncestorNode

Source/core/page/EventHandler.cpp

Index: Source/core/page/EventHandler.cpp
diff --git a/Source/core/page/EventHandler.cpp b/Source/core/page/EventHandler.cpp
index f02bbce05b9e47279bc664e816faf680e84d7f20..eaf6c3e995f8a101c4454f47b87e7216812d1ebb 100644
--- a/Source/core/page/EventHandler.cpp
+++ b/Source/core/page/EventHandler.cpp
@@ -2499,8 +2499,10 @@ bool EventHandler::bestClickableNodeForHitTestResult(const HitTestResult& result
     // FIXME: targetNode and success are only used by Internals functions. We should
     // instead have dedicated test methods so we only do this work in tests.
     bool success = findBestClickableCandidate(targetNode, targetPoint, touchCenter, touchRect, WillBeHeapVector<RefPtrWillBeMember<Node> > (nodes));
-    if (success && targetNode)
-        targetNode = targetNode->deprecatedShadowAncestorNode();
+    if (success && targetNode) {
+        if (targetNode->isInShadowTree())
+            targetNode = targetNode->shadowHost();
+    }
     return success;
 }