Make VisibleSelection::adjustSelectionToAvoidCrossingEditingBoundaries() not to call validate()

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

 /*
  * Copyright (C) 2004, 2005, 2006 Apple Computer, 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 632 matching lines @@
         if (p.isNull() && shadowAncestor)
           p = PositionTemplate<Strategy>::afterNode(shadowAncestor);
       }
       const VisiblePositionTemplate<Strategy> previous =
           createVisiblePosition(p);
 
       if (previous.isNull()) {
         // The selection crosses an Editing boundary.  This is a
         // programmer error in the editing code.  Happy debugging!
         NOTREACHED();
-        m_base = PositionTemplate<Strategy>();
-        m_extent = PositionTemplate<Strategy>();
-        validate();
+        *this = VisibleSelectionTemplate<Strategy>();
         return;
       }
       m_end = previous.deepEquivalent();
     }
 
     // The selection starts in editable content or non-editable content inside a
     // different editable ancestor, move forward until non-editable content
     // inside the same lowest editable ancestor is reached.
     Element* startEditableAncestor =
         lowestEditableAncestor(m_start.computeContainerNode());
@@ skipping 15 matching lines @@
                 : nextVisuallyDistinctCandidate(p);
         if (p.isNull() && shadowAncestor)
           p = PositionTemplate<Strategy>::beforeNode(shadowAncestor);
       }
       const VisiblePositionTemplate<Strategy> next = createVisiblePosition(p);
 
       if (next.isNull()) {
         // The selection crosses an Editing boundary.  This is a
         // programmer error in the editing code.  Happy debugging!
         NOTREACHED();
-        m_base = PositionTemplate<Strategy>();
-        m_extent = PositionTemplate<Strategy>();
-        validate();
+        *this = VisibleSelectionTemplate<Strategy>();
         return;
       }
       m_start = next.deepEquivalent();
     }
   }
 
   // Correct the extent if necessary.
   if (baseEditableAncestor !=
       lowestEditableAncestor(m_extent.computeContainerNode()))
     m_extent = m_baseIsFirst ? m_end : m_start;
@@ skipping 120 matching lines @@
 
 void showTree(const blink::VisibleSelectionInFlatTree& sel) {
   sel.showTreeForThis();
 }
 
 void showTree(const blink::VisibleSelectionInFlatTree* sel) {
   if (sel)
     sel->showTreeForThis();
 }
 #endif