Use precaching for more data: urls than just images.

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 16 matching lines @@
 #define ResourceFetcher_h
 
 #include "core/CoreExport.h"
 #include "core/fetch/CachePolicy.h"
 #include "core/fetch/FetchContext.h"
 #include "core/fetch/FetchInitiatorInfo.h"
 #include "core/fetch/FetchRequest.h"
 #include "core/fetch/Resource.h"
 #include "core/fetch/ResourceLoaderOptions.h"
 #include "core/fetch/ResourcePtr.h"
+#include "core/fetch/SubstituteData.h"
 #include "platform/Timer.h"
 #include "platform/network/ResourceError.h"
 #include "platform/network/ResourceLoadPriority.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
 #include "wtf/ListHashSet.h"
 #include "wtf/text/StringHash.h"
 
 namespace blink {
 
 class ArchiveResourceCollection;
 class CSSStyleSheetResource;
 class DocumentResource;
 class FontResource;
 class ImageResource;
 class MHTMLArchive;
 class RawResource;
 class ScriptResource;
-class SubstituteData;
 class XSLStyleSheetResource;
 class KURL;
 class ResourceTimingInfo;
 class ResourceLoaderSet;
 
 // The ResourceFetcher provides a per-context interface to the MemoryCache
 // and enforces a bunch of security checks and rules for resource revalidation.
 // Its lifetime is roughly per-DocumentLoader, in that it is generally created
 // in the DocumentLoader constructor and loses its ability to generate network
 // requests when the DocumentLoader is destroyed. Documents also hold a pointer
 // to ResourceFetcher for their lifetime (and will create one if they
 // are initialized without a LocalFrame), so a Document can keep a ResourceFetcher
 // alive past detach if scripts still reference the Document.
 class CORE_EXPORT ResourceFetcher : public GarbageCollectedFinalized<ResourceFetcher> {
     WTF_MAKE_NONCOPYABLE(ResourceFetcher);
     WILL_BE_USING_PRE_FINALIZER(ResourceFetcher, clearPreloads);
 public:
     static ResourceFetcher* create(FetchContext* context) { return new ResourceFetcher(context); }
     virtual ~ResourceFetcher();
     DECLARE_VIRTUAL_TRACE();
 
-    ResourcePtr<Resource> requestResource(FetchRequest&, const ResourceFactory&);
+    ResourcePtr<Resource> requestResource(FetchRequest&, const ResourceFactory&, const SubstituteData& = SubstituteData());
 
     Resource* cachedResource(const KURL&) const;
 
     typedef HashMap<String, ResourcePtr<Resource>> DocumentResourceMap;
     const DocumentResourceMap& allResources() const { return m_documentResources; }
 
     bool autoLoadImages() const { return m_autoLoadImages; }
     void setAutoLoadImages(bool);
 
     void setImagesEnabled(bool);
@@ skipping 43 matching lines @@
     bool isControlledByServiceWorker() const;
 
     void acceptDataFromThreadedReceiver(unsigned long identifier, const char* data, int dataLength, int encodedDataLength);
 
     ResourceLoadPriority loadPriority(Resource::Type, const FetchRequest&);
 
     enum ResourceLoadStartType {
         ResourceLoadingFromNetwork,
         ResourceLoadingFromCache
     };
-    void requestLoadStarted(Resource*, const FetchRequest&, ResourceLoadStartType);
+    void requestLoadStarted(Resource*, const FetchRequest&, ResourceLoadStartType, bool isStaticData = false);
     static const ResourceLoaderOptions& defaultResourceOptions();
 
     String getCacheIdentifier() const;
 
     void scheduleDocumentResourcesGC();
     bool clientDefersImage(const KURL&) const;
     void determineRequestContext(ResourceRequest&, Resource::Type);
 
 private:
     friend class ResourceCacheValidationSuppressor;
 
     explicit ResourceFetcher(FetchContext*);
 
     ResourcePtr<Resource> createResourceForRevalidation(const FetchRequest&, Resource*, const ResourceFactory&);
     ResourcePtr<Resource> createResourceForLoading(FetchRequest&, const String& charset, const ResourceFactory&);
     void storeResourceTimingInitiatorInformation(Resource*);
     bool scheduleArchiveLoad(Resource*, const ResourceRequest&);
+    void preCacheData(const FetchRequest&, const ResourceFactory&, const SubstituteData&);
 
     enum RevalidationPolicy { Use, Revalidate, Reload, Load };
-    RevalidationPolicy determineRevalidationPolicy(Resource::Type, const FetchRequest&, Resource* existingResource) const;
+    RevalidationPolicy determineRevalidationPolicy(Resource::Type, const FetchRequest&, Resource* existingResource, bool isStaticData) const;
 
     void initializeResourceRequest(ResourceRequest&, Resource::Type);
 
     static bool resourceNeedsLoad(Resource*, const FetchRequest&, RevalidationPolicy);
 
     void notifyLoadedFromMemoryCache(Resource*);
 
     void garbageCollectDocumentResourcesTimerFired(Timer<ResourceFetcher>*);
 
     void resourceTimingReportTimerFired(Timer<ResourceFetcher>*);
@@ skipping 69 matching lines @@
             m_loader->m_allowStaleResources = m_previousState;
     }
 private:
     Member<ResourceFetcher> m_loader;
     bool m_previousState;
 };
 
 } // namespace blink
 
 #endif // ResourceFetcher_h