Improve how DocumentMarkerController updates markers in response to text edits

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

 /*
  * Copyright (C) 2005, 2006 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 453 matching lines @@
       LeadingWhitespacePosition(insertion_position, VP_DEFAULT_AFFINITY);
   // FIXME: leadingWhitespacePosition is returning the position before preserved
   // newlines for positions after the preserved newline, causing the newline to
   // be turned into a nbsp.
   if (leading_whitespace.IsNotNull() &&
       leading_whitespace.AnchorNode()->IsTextNode()) {
     Text* text_node = ToText(leading_whitespace.AnchorNode());
     DCHECK(!text_node->GetLayoutObject() ||
            text_node->GetLayoutObject()->Style()->CollapseWhiteSpace())
         << text_node;
-    ReplaceTextInNodePreservingMarkers(
-        text_node, leading_whitespace.ComputeOffsetInContainerNode(), 1,
-        NonBreakingSpaceString());
+    ReplaceTextInNode(text_node,
+                      leading_whitespace.ComputeOffsetInContainerNode(), 1,
+                      NonBreakingSpaceString());
     GetDocument().UpdateStyleAndLayoutIgnorePendingStylesheets();
   }
 
   // Split at pos if in the middle of a text node.
   Position position_after_split;
   if (insertion_position.IsOffsetInAnchor() &&
       insertion_position.ComputeContainerNode()->IsTextNode()) {
     Text* text_node = ToText(insertion_position.ComputeContainerNode());
     int text_offset = insertion_position.OffsetInContainerNode();
     bool at_end = static_cast<unsigned>(text_offset) >= text_node->length();
@@ skipping 100 matching lines @@
           .Build());
   ApplyStyleAfterInsertion(start_block, editing_state);
 }
 
 DEFINE_TRACE(InsertParagraphSeparatorCommand) {
   visitor->Trace(style_);
   CompositeEditCommand::Trace(visitor);
 }
 
 }  // namespace blink