Use the ReloadBypassingCache policy

Source/core/fetch/ResourceFetcher.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
@@ skipping 751 matching lines @@
 void ResourceFetcher::determineTargetType(ResourceRequest& request, Resource::Type type)
 {
     ResourceRequest::TargetType targetType = requestTargetType(this, request, type);
     request.setTargetType(targetType);
 }
 
 ResourceRequestCachePolicy ResourceFetcher::resourceRequestCachePolicy(const ResourceRequest& request, Resource::Type type)
 {
     if (type == Resource::MainResource) {
         FrameLoadType frameLoadType = frame()->loader().loadType();
-        bool isReload = frameLoadType == FrameLoadTypeReload || frameLoadType == FrameLoadTypeReloadFromOrigin;
         if (request.httpMethod() == "POST" && frameLoadType == FrameLoadTypeBackForward)
             return ReturnCacheDataDontLoad;
         if (!m_documentLoader->overrideEncoding().isEmpty() || frameLoadType == FrameLoadTypeBackForward)
             return ReturnCacheDataElseLoad;
-        if (isReload || frameLoadType == FrameLoadTypeSame || request.isConditional() || request.httpMethod() == "POST")
+        if (frameLoadType == FrameLoadTypeReloadFromOrigin)
+            return ReloadBypassingCache;
+        if (frameLoadType == FrameLoadTypeReload || frameLoadType == FrameLoadTypeSame || request.isConditional() || request.httpMethod() == "POST")
             return ReloadIgnoringCacheData;
         Frame* parent = frame()->tree().parent();
         if (parent && parent->isLocalFrame())
             return toLocalFrame(parent)->document()->fetcher()->resourceRequestCachePolicy(request, type);
         return UseProtocolCachePolicy;
     }
 
     if (request.isConditional())
         return ReloadIgnoringCacheData;
 
@@ skipping 675 matching lines @@
     }
 }
 
 void ResourceFetcher::trace(Visitor* visitor)
 {
     visitor->trace(m_document);
     ResourceLoaderHost::trace(visitor);
 }
 
 }