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

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

 /*
  * Copyright (C) 2014, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 744 matching lines @@
     if (idsChanged)
         m_ariaOwnerToIdsMapping.set(owner->axObjectID(), newIds);
 
     //
     // Now figure out the ids that actually correspond to children that exist and
     // that we can legally own (not cyclical, not already owned, etc.) and update
     // the maps and |ownedChildren| based on that.
     //
 
     // Figure out the children that are owned by this object and are in the tree.
-    TreeScope& scope = owner->getNode()->treeScope();
+    TreeScope& scope = owner->getNode()->treeScopeOrDocument();
     Vector<AXID> newChildAXIDs;
     for (const String& idName : idVector) {
         Element* element = scope.getElementById(AtomicString(idName));
         if (!element)
             continue;
 
         AXObject* child = getOrCreate(element);
         if (!child)
             continue;
 
@@ skipping 494 matching lines @@
     visitor->trace(m_document);
     visitor->trace(m_nodeObjectMapping);
 
     visitor->trace(m_objects);
     visitor->trace(m_notificationsToPost);
 
     AXObjectCache::trace(visitor);
 }
 
 } // namespace blink