Rewrite DocumentMarkerController to use SynchronousMutationObserver

third_party/WebKit/Source/core/editing/commands/DeleteSelectionCommand.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 734 matching lines @@
   // TODO(yosin) |isRenderedCharacter()| should be removed, and we should use
   // |VisiblePosition::characterAfter()| and
   // |VisiblePosition::characterBefore()|
   if (m_leadingWhitespace.isNotNull() &&
       !isRenderedCharacter(m_leadingWhitespace) &&
       m_leadingWhitespace.anchorNode()->isTextNode()) {
     Text* textNode = toText(m_leadingWhitespace.anchorNode());
     DCHECK(!textNode->layoutObject() ||
            textNode->layoutObject()->style()->collapseWhiteSpace())
         << textNode;
-    replaceTextInNodePreservingMarkers(
-        textNode, m_leadingWhitespace.computeOffsetInContainerNode(), 1,
-        nonBreakingSpaceString());
+    replaceTextInNode(textNode,
+                      m_leadingWhitespace.computeOffsetInContainerNode(), 1,
+                      nonBreakingSpaceString());
   }
   if (m_trailingWhitespace.isNotNull() &&
       !isRenderedCharacter(m_trailingWhitespace) &&
       m_trailingWhitespace.anchorNode()->isTextNode()) {
     Text* textNode = toText(m_trailingWhitespace.anchorNode());
     DCHECK(!textNode->layoutObject() ||
            textNode->layoutObject()->style()->collapseWhiteSpace())
         << textNode;
-    replaceTextInNodePreservingMarkers(
-        textNode, m_trailingWhitespace.computeOffsetInContainerNode(), 1,
-        nonBreakingSpaceString());
+    replaceTextInNode(textNode,
+                      m_trailingWhitespace.computeOffsetInContainerNode(), 1,
+                      nonBreakingSpaceString());
   }
 }
 
 // If a selection starts in one block and ends in another, we have to merge to
 // bring content before the start together with content after the end.
 void DeleteSelectionCommand::mergeParagraphs(EditingState* editingState) {
   if (!m_mergeBlocksAfterDelete) {
     if (m_pruneStartBlockIfNecessary) {
       // We aren't going to merge into the start block, so remove it if it's
       // empty.
@@ skipping 450 matching lines @@
   visitor->trace(m_deleteIntoBlockquoteStyle);
   visitor->trace(m_startRoot);
   visitor->trace(m_endRoot);
   visitor->trace(m_startTableRow);
   visitor->trace(m_endTableRow);
   visitor->trace(m_temporaryPlaceholder);
   CompositeEditCommand::trace(visitor);
 }
 
 }  // namespace blink