Replace LayoutTests/paint/invalidation/text-selection-focus.html with a SimTest.

third_party/WebKit/Source/core/editing/DOMSelection.h

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2012 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.
@@ skipping 50 matching lines @@
   // These methods return the valid equivalents of internal editing positions.
   Node* baseNode() const;
   int baseOffset() const;
   Node* extentNode() const;
   int extentOffset() const;
   String type() const;
   void setBaseAndExtent(Node* baseNode,
                         int baseOffset,
                         Node* extentNode,
                         int extentOffset,
-                        ExceptionState&);
+                        ExceptionState& = ASSERT_NO_EXCEPTION);
   void modify(const String& alter,
               const String& direction,
               const String& granularity);
 
   // Mozilla Selection Object API
   // In Firefox, anchor/focus are the equal to the start/end of the selection,
   // but reflect the direction in which the selection was made by the user. That
   // does not mean that they are base/extent, since the base/extent don't
   // reflect expansion.
   // These methods return the valid equivalents of internal editing positions.
@@ skipping 35 matching lines @@
   bool isValidForPosition(Node*) const;
 
   void addConsoleError(const String& message);
 
   Member<const TreeScope> m_treeScope;
 };
 
 }  // namespace blink
 
 #endif  // DOMSelection_h