Remove unnecessary layout updates from InsertInto/DeleteFromTextNodeCommand

third_party/WebKit/Source/core/editing/commands/InsertIntoTextNodeCommand.cpp

 /*
  * Copyright (C) 2005, 2008 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 45 matching lines @@
     return;
 
   if (passwordEchoEnabled) {
     LayoutText* layoutText = m_node->layoutObject();
     if (layoutText && layoutText->isSecure())
       layoutText->momentarilyRevealLastTypedCharacter(m_offset +
                                                       m_text.length() - 1);
   }
 
   m_node->insertData(m_offset, m_text, IGNORE_EXCEPTION_FOR_TESTING);
-  document().updateStyleAndLayout();
 }
 
 void InsertIntoTextNodeCommand::doUnapply() {
   if (!hasEditableStyle(*m_node))
     return;
 
   m_node->deleteData(m_offset, m_text.length(), IGNORE_EXCEPTION_FOR_TESTING);
-  document().updateStyleAndLayout();
 }
 
 DEFINE_TRACE(InsertIntoTextNodeCommand) {
   visitor->trace(m_node);
   SimpleEditCommand::trace(visitor);
 }
 
 }  // namespace blink