Remove mail blockquote special case handling.

Source/WebCore/editing/BreakBlockquoteCommand.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 48 matching lines @@
     
     if (endingSelection().isNone())
         return;
         
     VisiblePosition visiblePos = endingSelection().visibleStart();
     
     // pos is a position equivalent to the caret.  We use downstream() so that pos will 
     // be in the first node that we need to move (there are a few exceptions to this, see below).
     Position pos = endingSelection().start().downstream();
     
-    // Find the top-most blockquote from the start.
-    Node* topBlockquote = highestEnclosingNodeOfType(pos, isMailBlockquote);
-    if (!topBlockquote || !topBlockquote->parentNode() || !topBlockquote->isElementNode())
-        return;
-    
     RefPtr<Element> breakNode = createBreakElement(document());
 
     bool isLastVisPosInNode = isLastVisiblePositionInNode(visiblePos, topBlockquote);
 
     // If the position is at the beginning of the top quoted content, we don't need to break the quote.
     // Instead, insert the break before the blockquote, unless the position is as the end of the the quoted content.
     if (isFirstVisiblePositionInNode(visiblePos, topBlockquote) && !isLastVisPosInNode) {
         insertNodeBefore(breakNode.get(), topBlockquote);
         setEndingSelection(VisibleSelection(positionBeforeNode(breakNode.get()), DOWNSTREAM, endingSelection().isDirectional()));
         rebalanceWhitespace();   
         return;
     }
     
     // Insert a break after the top blockquote.
     insertNodeAfter(breakNode.get(), topBlockquote);
 
     // If we're inserting the break at the end of the quoted content, we don't need to break the quote.
     if (isLastVisPosInNode) {
         setEndingSelection(VisibleSelection(positionBeforeNode(breakNode.get()), DOWNSTREAM, endingSelection().isDirectional()));
         rebalanceWhitespace();
         return;
     }
     
     // Don't move a line break just after the caret.  Doing so would create an extra, empty paragraph
     // in the new blockquote.
     if (lineBreakExistsAtVisiblePosition(visiblePos))
         pos = pos.next();
         
-    // Adjust the position so we don't split at the beginning of a quote.  
-    while (isFirstVisiblePositionInNode(VisiblePosition(pos), enclosingNodeOfType(pos, isMailBlockquote)))
-        pos = pos.previous();
-    
     // startNode is the first node that we need to move to the new blockquote.
     Node* startNode = pos.deprecatedNode();
         
     // Split at pos if in the middle of a text node.
     if (startNode->isTextNode()) {
         Text* textNode = toText(startNode);
         if ((unsigned)pos.deprecatedEditingOffset() >= textNode->length()) {
             startNode = NodeTraversal::next(startNode);
             ASSERT(startNode);
         } else if (pos.deprecatedEditingOffset() > 0)
@@ skipping 63 matching lines @@
     
     // Make sure the cloned block quote renders.
     addBlockPlaceholderIfNeeded(clonedBlockquote.get());
     
     // Put the selection right before the break.
     setEndingSelection(VisibleSelection(positionBeforeNode(breakNode.get()), DOWNSTREAM, endingSelection().isDirectional()));
     rebalanceWhitespace();
 }
 
 } // namespace WebCore