Remove unused includes from various .cpp files in core/

Source/core/editing/EditorCommand.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Igalia S.L.
  *
  * 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.
@@ skipping 13 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  */
 
 #include "config.h"
 #include "core/editing/Editor.h"
 
 #include "CSSPropertyNames.h"
 #include "CSSValueKeywords.h"
 #include "HTMLNames.h"
-#include "core/css/CSSComputedStyleDeclaration.h"
 #include "core/css/CSSValueList.h"
 #include "core/css/StylePropertySet.h"
 #include "core/dom/DocumentFragment.h"
 #include "core/dom/Event.h"
 #include "core/dom/ExceptionCodePlaceholder.h"
 #include "core/dom/UserTypingGestureIndicator.h"
 #include "core/editing/CreateLinkCommand.h"
 #include "core/editing/FormatBlockCommand.h"
 #include "core/editing/IndentOutdentCommand.h"
 #include "core/editing/InsertListCommand.h"
 #include "core/editing/ReplaceSelectionCommand.h"
 #include "core/editing/TypingCommand.h"
 #include "core/editing/UnlinkCommand.h"
-#include "core/editing/htmlediting.h"
 #include "core/editing/markup.h"
 #include "core/html/HTMLFontElement.h"
 #include "core/html/HTMLHRElement.h"
 #include "core/html/HTMLImageElement.h"
 #include "core/page/Chrome.h"
 #include "core/page/EditorClient.h"
 #include "core/page/EventHandler.h"
 #include "core/page/Frame.h"
 #include "core/page/FrameView.h"
 #include "core/page/Page.h"
@@ skipping 1670 matching lines @@
         return m_command->state(m_frame.get(), triggeringEvent) == TrueTriState ? "true" : "false";
     return m_command->value(m_frame.get(), triggeringEvent);
 }
 
 bool Editor::Command::isTextInsertion() const
 {
     return m_command && m_command->isTextInsertion;
 }
 
 } // namespace WebCore