Remove unused includes from various .cpp files in core/

Source/core/xml/XMLTreeViewer.cpp

 /*
  * Copyright (C) 2011 Google 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.
  *
@@ skipping 15 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/xml/XMLTreeViewer.h"
 
 #include "XMLViewerCSS.h"
 #include "XMLViewerJS.h"
 #include "bindings/v8/ScriptController.h"
 #include "bindings/v8/ScriptSourceCode.h"
-#include "bindings/v8/ScriptValue.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/ExceptionCodePlaceholder.h"
 #include "core/dom/Text.h"
 #include "core/page/Frame.h"
-#include "core/page/Page.h"
-#include "core/page/Settings.h"
 
 using namespace std;
 
 namespace WebCore {
 
 XMLTreeViewer::XMLTreeViewer(Document* document)
     : m_document(document)
 {
 }
 
@@ skipping 19 matching lines @@
     String noStyleMessage("This XML file does not appear to have any style information associated with it. The document tree is shown below.");
     m_document->frame()->script()->executeScriptInMainWorld(ScriptSourceCode("prepareWebKitXMLViewer('" + noStyleMessage + "');"));
 
     String cssString(reinterpret_cast<const char*>(XMLViewer_css), sizeof(XMLViewer_css));
     RefPtr<Text> text = m_document->createTextNode(cssString);
     m_document->getElementById("xml-viewer-style")->appendChild(text, IGNORE_EXCEPTION);
     m_document->styleResolverChanged(RecalcStyleImmediately);
 }
 
 } // namespace WebCore