Rename isBlock() to isEnclosingBlock() in EditingUtilities

Source/core/editing/commands/InsertListCommand.cpp

 /*
  * Copyright (C) 2006, 2010 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 363 matching lines @@
     RefPtrWillBeRawPtr<HTMLElement> listElement = nullptr;
     if (previousList) {
         appendNode(listItemElement, previousList);
     } else if (nextList) {
         insertNodeAt(listItemElement, positionBeforeNode(nextList));
     } else {
         // Create the list.
         listElement = createHTMLElement(document(), listTag);
         appendNode(listItemElement, listElement);
 
-        if (start.deepEquivalent() == end.deepEquivalent() && isBlock(start.deepEquivalent().anchorNode())) {
+        if (start.deepEquivalent() == end.deepEquivalent() && isEnclosingBlock(start.deepEquivalent().anchorNode())) {
             // Inserting the list into an empty paragraph that isn't held open
             // by a br or a '\n', will invalidate start and end.  Insert
             // a placeholder and then recompute start and end.
             RefPtrWillBeRawPtr<HTMLBRElement> placeholder = insertBlockPlaceholder(start.deepEquivalent());
             start = VisiblePosition(positionBeforeNode(placeholder.get()));
             end = start;
         }
 
         // Insert the list at a position visually equivalent to start of the
         // paragraph that is being moved into the list.
@@ skipping 32 matching lines @@
     return listElement;
 }
 
 DEFINE_TRACE(InsertListCommand)
 {
     visitor->trace(m_listElement);
     CompositeEditCommand::trace(visitor);
 }
 
 }