Expose a cachePolicy parameter to loadHistoryItem.

Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ skipping 1446 matching lines @@
             }
         }
         ASSERT(frame != m_frame);
     }
 
     if (!activeDocument->canNavigate(frame))
         return 0;
     return frame;
 }
 
-void FrameLoader::loadHistoryItem(HistoryItem* item, HistoryLoadType historyLoadType)
+void FrameLoader::loadHistoryItem(HistoryItem* item, HistoryLoadType historyLoadType, ResourceRequestCachePolicy cachePolicy)
 {
     saveDocumentAndScrollState();
     m_currentItem = item;
     if (historyLoadType == HistorySameDocumentLoad) {
         loadInSameDocument(item->url(), item->stateObject(), false, NotClientRedirect);
         restoreScrollPositionAndViewState(ForcedRestoreForSameDocumentHistoryNavigation);
         return;
     }
 
     RefPtr<FormData> formData = item->formData();
     ResourceRequest request(item->url());
     request.setHTTPReferrer(item->referrer());
+    request.setCachePolicy(cachePolicy);
     if (formData) {
         request.setHTTPMethod("POST");
         request.setHTTPBody(formData);
         request.setHTTPContentType(item->formContentType());
         RefPtr<SecurityOrigin> securityOrigin = SecurityOrigin::createFromString(item->referrer());
         addHTTPOriginIfNeeded(request, securityOrigin->toString());
     }
 
     loadWithNavigationAction(NavigationAction(request, FrameLoadTypeBackForward, formData), FrameLoadTypeBackForward, 0, SubstituteData());
 }
@@ skipping 31 matching lines @@
 {
     SandboxFlags flags = m_forcedSandboxFlags;
     if (Frame* parentFrame = m_frame->tree().parent())
         flags |= parentFrame->document()->sandboxFlags();
     if (HTMLFrameOwnerElement* ownerElement = m_frame->ownerElement())
         flags |= ownerElement->sandboxFlags();
     return flags;
 }
 
 } // namespace WebCore