Keep track of accessibility focus across windows.

third_party/WebKit/Source/modules/accessibility/AXObject.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXObject.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXObject.cpp b/third_party/WebKit/Source/modules/accessibility/AXObject.cpp
index 906d4e75476a98a97640f169f35952f7bd6cf077..a9c38e52555f43e1436016f1b274e741a2ff3919 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXObject.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXObject.cpp
@@ -1182,19 +1182,6 @@ void AXObject::clearChildren()
     m_haveChildren = false;
 }
 
-AXObject* AXObject::focusedUIElement() const
-{
-    Document* doc = document();
-    if (!doc)
-        return 0;
-
-    Page* page = doc->page();
-    if (!page)
-        return 0;
-
-    return axObjectCache().focusedUIElementForPage(page);
-}
-
 Document* AXObject::document() const
 {
     FrameView* frameView = documentFrameView();