Remove unnecessary Document.h includes in .cpp files

Source/modules/quota/DOMWindowQuota.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (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 "modules/quota/DOMWindowQuota.h"
 
-#include "core/dom/Document.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "modules/quota/DeprecatedStorageInfo.h"
 #include "wtf/PassRefPtr.h"
 
 namespace WebCore {
 
 DOMWindowQuota::DOMWindowQuota(LocalDOMWindow& window)
     : DOMWindowProperty(window.frame())
 {
@@ skipping 32 matching lines @@
     return m_storageInfo.get();
 }
 
 void DOMWindowQuota::trace(Visitor* visitor)
 {
     visitor->trace(m_storageInfo);
     WillBeHeapSupplement<LocalDOMWindow>::trace(visitor);
 }
 
 } // namespace WebCore