Add 'XHR' to the Resource::Type enum, and use it for XHR requests.

Source/core/fetch/ResourceFetcher.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@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
     version 2 of the License, or (at your option) any later version.
@@ skipping 73 matching lines @@
     using RefCounted<ResourceFetcher>::deref;
 #endif
 
     ResourcePtr<Resource> fetchSynchronously(FetchRequest&);
     ResourcePtr<ImageResource> fetchImage(FetchRequest&);
     ResourcePtr<CSSStyleSheetResource> fetchCSSStyleSheet(FetchRequest&);
     ResourcePtr<CSSStyleSheetResource> fetchUserCSSStyleSheet(FetchRequest&);
     ResourcePtr<ScriptResource> fetchScript(FetchRequest&);
     ResourcePtr<FontResource> fetchFont(FetchRequest&);
     ResourcePtr<RawResource> fetchRawResource(FetchRequest&);
+    ResourcePtr<RawResource> fetchXMLHttpRequest(FetchRequest&);
     ResourcePtr<RawResource> fetchMainResource(FetchRequest&, const SubstituteData&);
     ResourcePtr<DocumentResource> fetchSVGDocument(FetchRequest&);
     ResourcePtr<XSLStyleSheetResource> fetchXSLStyleSheet(FetchRequest&);
     ResourcePtr<Resource> fetchLinkResource(Resource::Type, FetchRequest&);
     ResourcePtr<RawResource> fetchImport(FetchRequest&);
     ResourcePtr<RawResource> fetchMedia(FetchRequest&);
     ResourcePtr<RawResource> fetchTextTrack(FetchRequest&);
 
     // Logs an access denied message to the console for the specified URL.
     void printAccessDeniedMessage(const KURL&) const;
@@ skipping 78 matching lines @@
     void requestPreload(Resource::Type, FetchRequest&, const String& charset);
 
     enum RevalidationPolicy { Use, Revalidate, Reload, Load };
     RevalidationPolicy determineRevalidationPolicy(Resource::Type, const FetchRequest&, Resource* existingResource) const;
 
     void determineTargetType(ResourceRequest&, Resource::Type);
     ResourceRequestCachePolicy resourceRequestCachePolicy(const ResourceRequest&, Resource::Type);
     void addAdditionalRequestHeaders(ResourceRequest&, Resource::Type);
 
     bool canRequest(Resource::Type, const KURL&, const ResourceLoaderOptions&, bool forPreload, FetchRequest::OriginRestriction) const;
-    bool checkInsecureContent(Resource::Type, const KURL&, MixedContentBlockingTreatment) const;
+    bool checkInsecureContent(Resource::Type, const KURL&) const;
 
     static bool resourceNeedsLoad(Resource*, const FetchRequest&, RevalidationPolicy);
 
     void notifyLoadedFromMemoryCache(Resource*);
 
     void garbageCollectDocumentResourcesTimerFired(Timer<ResourceFetcher>*);
     void scheduleDocumentResourcesGC();
 
     void resourceTimingReportTimerFired(Timer<ResourceFetcher>*);
 
@@ skipping 63 matching lines @@
             m_loader->m_allowStaleResources = m_previousState;
     }
 private:
     ResourceFetcher* m_loader;
     bool m_previousState;
 };
 
 } // namespace WebCore
 
 #endif