Remove unused includes from various .cpp files in core/

Source/core/loader/MixedContentChecker.cpp

 /*
  * Copyright (C) 2012 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. 
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 14 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/loader/MixedContentChecker.h"
 
 #include "core/dom/Document.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
-#include "core/page/Console.h"
-#include "core/page/DOMWindow.h"
 #include "core/page/Frame.h"
 #include "core/page/Settings.h"
-#include "weborigin/SchemeRegistry.h"
 #include "weborigin/SecurityOrigin.h"
-#include "wtf/text/CString.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 MixedContentChecker::MixedContentChecker(Frame* frame)
     : m_frame(frame)
 {
 }
 
 FrameLoaderClient* MixedContentChecker::client() const
@@ skipping 41 matching lines @@
     return allowed;
 }
 
 void MixedContentChecker::logWarning(bool allowed, const String& action, const KURL& target) const
 {
     String message = String(allowed ? "" : "[blocked] ") + "The page at " + m_frame->document()->url().elidedString() + " " + action + " insecure content from " + target.elidedString() + ".\n";
     m_frame->document()->addConsoleMessage(SecurityMessageSource, WarningMessageLevel, message);
 }
 
 } // namespace WebCore