Remove unnecessary layout updates from InsertInto/DeleteFromTextNodeCommand

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

 /*
  * Copyright (C) 2005 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 191 matching lines @@
   startPosition = mostBackwardCaretPosition(startPosition);
 
   // It is possible for the node that contains startPosition to contain only
   // unrendered whitespace, and so deleteInsignificantText could remove it.
   // Save the position before the node in case that happens.
   DCHECK(startPosition.computeContainerNode()) << startPosition;
   Position positionBeforeStartNode(
       Position::inParentBeforeNode(*startPosition.computeContainerNode()));
   deleteInsignificantText(startPosition,
                           mostForwardCaretPosition(startPosition));
+
+  // TODO(editing-dev): Use of updateStyleAndLayoutIgnorePendingStylesheets()
+  // needs to be audited.  See http://crbug.com/590369 for more details.
+  document().updateStyleAndLayoutIgnorePendingStylesheets();
+
   if (!startPosition.isConnected())
     startPosition = positionBeforeStartNode;
   if (!isVisuallyEquivalentCandidate(startPosition))
     startPosition = mostForwardCaretPosition(startPosition);
 
   startPosition =
       positionAvoidingSpecialElementBoundary(startPosition, editingState);
   if (editingState->isAborted())
     return;
 
@@ skipping 102 matching lines @@
     }
   }
   if (editingState->isAborted())
     return Position();
 
   // return the position following the new tab
   return Position::lastPositionInNode(spanElement);
 }
 
 }  // namespace blink