Remove the redundant layout update from WebSurroundingText::textContent

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

 /*
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 30 matching lines @@
 class Range;
 
 class CORE_EXPORT SurroundingText {
   USING_FAST_MALLOC(SurroundingText);
   WTF_MAKE_NONCOPYABLE(SurroundingText);
 
  public:
   SurroundingText(const Range&, unsigned maxLength);
   SurroundingText(const Position&, unsigned maxLength);
 
-  Document* document() const;
-
   String content() const;
   unsigned startOffsetInContent() const;
   unsigned endOffsetInContent() const;
 
  private:
   void initialize(const Position&, const Position&, unsigned maxLength);
 
   Persistent<Range> m_contentRange;
   size_t m_startOffsetInContent;
   size_t m_endOffsetInContent;
 };
 
 }  // namespace blink
 
 #endif  // SurroundingText_h