Remove mail blockquote special case handling.

Source/WebCore/editing/Editor.h

 /*
  * Copyright (C) 2006, 2007, 2008 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 189 matching lines @@
     Command command(const String& commandName); // Command source is CommandFromMenuOrKeyBinding.
     Command command(const String& commandName, EditorCommandSource);
     static bool commandIsSupportedFromMenuOrKeyBinding(const String& commandName); // Works without a frame.
 
     bool insertText(const String&, Event* triggeringEvent);
     bool insertTextForConfirmedComposition(const String& text);
     bool insertDictatedText(const String&, const Vector<DictationAlternative>& dictationAlternatives, Event* triggeringEvent);
     bool insertTextWithoutSendingTextEvent(const String&, bool selectInsertedText, TextEvent* triggeringEvent);
     bool insertLineBreak();
     bool insertParagraphSeparator();
-
-#if PLATFORM(MAC)
-    bool insertParagraphSeparatorInQuotedContent();
-#endif
     
     bool isContinuousSpellCheckingEnabled() const;
     void toggleContinuousSpellChecking();
     bool isGrammarCheckingEnabled();
     void toggleGrammarChecking();
     void ignoreSpelling();
     void learnSpelling();
     int spellCheckerDocumentTag();
     bool isSelectionUngrammatical();
     String misspelledSelectionString() const;
@@ skipping 240 matching lines @@
 
 inline bool Editor::markedTextMatchesAreHighlighted() const
 {
     return m_areMarkedTextMatchesHighlighted;
 }
 
 
 } // namespace WebCore
 
 #endif // Editor_h