Lazily generate HistoryItem's serialized form state

Source/web/WebHistoryItem.cpp

 /*
  * Copyright (C) 2009 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 15 matching lines @@
  * 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 "WebHistoryItem.h"
 
 #include "WebSerializedScriptValue.h"
 #include "bindings/v8/SerializedScriptValue.h"
-#include "core/html/forms/FormController.h"
 #include "core/loader/HistoryItem.h"
 #include "platform/network/FormData.h"
 #include "platform/weborigin/KURL.h"
 #include "public/platform/WebHTTPBody.h"
 #include "public/platform/WebPoint.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebVector.h"
 #include "wtf/text/StringHash.h"
 
 using namespace WebCore;
 
 namespace blink {
 namespace {
 
 void addReferencedFilePaths(HistoryItem* item, HashSet<String>& results)
 {
     const FormData* formData = item->formData();
     if (formData) {
         for (size_t i = 0; i < formData->elements().size(); ++i) {
             const FormDataElement& element = formData->elements()[i];
             if (element.m_type == FormDataElement::encodedFile)
                 results.add(element.m_filename);
         }
     }
 
-    const Vector<String>& filePaths = FormController::getReferencedFilePaths(item->documentState());
+    const Vector<String>& filePaths = item->getReferencedFilePaths();
     for (size_t i = 0; i < filePaths.size(); ++i)
         results.add(filePaths[i]);
 
     const HistoryItemVector& children = item->deprecatedChildren();
     for (size_t i = 0; i < children.size(); ++i)
         addReferencedFilePaths(children[i].get(), results);
 }
 
 } // namespace
 
@@ skipping 168 matching lines @@
     m_private = item;
     return *this;
 }
 
 WebHistoryItem::operator PassRefPtr<HistoryItem>() const
 {
     return m_private.get();
 }
 
 } // namespace blink