Make rootEditableElementOrTreeScopeRootNodeOf() to take Position instead of VisibleSeleciton

third_party/WebKit/Source/core/editing/FrameSelection.cpp

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 123 matching lines @@
 
 Element* FrameSelection::rootEditableElementOrDocumentElement() const {
   Element* selectionRoot =
       computeVisibleSelectionInDOMTreeDeprecated().rootEditableElement();
   return selectionRoot ? selectionRoot : document().documentElement();
 }
 
 // TODO(yosin): We should move |rootEditableElementOrTreeScopeRootNodeOf()| to
 // "EditingUtilities.cpp"
 ContainerNode* rootEditableElementOrTreeScopeRootNodeOf(
-    const VisibleSelection& visibleSelection) {
-  Element* selectionRoot = visibleSelection.rootEditableElement();
+    const Position& position) {
+  Element* selectionRoot = rootEditableElementOf(position);
   if (selectionRoot)
     return selectionRoot;
 
-  Node* const node = visibleSelection.base().computeContainerNode();
+  Node* const node = position.computeContainerNode();
   return node ? &node->treeScope().rootNode() : 0;
 }
 
 const VisibleSelection&
 FrameSelection::computeVisibleSelectionInDOMTreeDeprecated() const {
   // TODO(yosin): We should hoist updateStyleAndLayoutIgnorePendingStylesheets
   // to caller. See http://crbug.com/590369 for more details.
   document().updateStyleAndLayoutIgnorePendingStylesheets();
   return computeVisibleSelectionInDOMTree();
 }
@@ skipping 998 matching lines @@
 }
 
 void showTree(const blink::FrameSelection* sel) {
   if (sel)
     sel->showTreeForThis();
   else
     LOG(INFO) << "Cannot showTree for <null> FrameSelection.";
 }
 
 #endif