Rename Node::treeScope() to Node::treeScopeOrDocument()

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

Index: third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp b/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
index 0e68691113381ecaef9955e8a2d8d8af865009b7..fb58dcc3e12943f7adfc42b92fc9b9638dd0b87a 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
@@ -153,7 +153,7 @@ AXObject* AXNodeObject::activeDescendant() const
         return nullptr;
 
     Element* element = toElement(getNode());
-    Element* descendant = element->treeScope().getElementById(activeDescendantAttr);
+    Element* descendant = element->treeScopeOrDocument().getElementById(activeDescendantAttr);
     if (!descendant)
         return nullptr;
 
@@ -650,7 +650,7 @@ HTMLLabelElement* AXNodeObject::labelForElement(const Element* element) const
 
     const AtomicString& id = element->getIdAttribute();
     if (!id.isEmpty()) {
-        if (HTMLLabelElement* labelFor = element->treeScope().labelElementForId(id))
+        if (HTMLLabelElement* labelFor = element->treeScopeOrDocument().labelElementForId(id))
             return labelFor;
     }