Rename renderer to layoutObject in core/editing.

Source/core/editing/iterators/SimplifiedBackwardsTextIterator.h

 /*
  * Copyright (C) 2004, 2006, 2009 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 90 matching lines @@
     String m_textContainer; // We're interested in the range [m_textOffset, m_textOffset + m_textLength) of m_textContainer.
     int m_textOffset;
     int m_textLength;
 
     // Used for whitespace characters that aren't in the DOM, so we can point at them.
     UChar m_singleCharacterBuffer;
 
     // Whether m_node has advanced beyond the iteration range (i.e. m_startNode).
     bool m_havePassedStartNode;
 
-    // Should handle first-letter renderer in the next call to handleTextNode.
+    // Should handle first-letter layoutObject in the next call to handleTextNode.
     bool m_shouldHandleFirstLetter;
 
     // Used when the iteration should stop if form controls are reached.
     bool m_stopsOnFormControls;
 
     // Used when m_stopsOnFormControls is set to determine if the iterator should keep advancing.
     bool m_shouldStop;
 
     // Used in pasting inside password field.
     bool m_emitsOriginalText;
 };
 
 } // namespace blink
 
 #endif // SimplifiedBackwardsTextIterator_h