Allow cache reuse of some requests with Cache-Control headers

Source/core/fetch/Resource.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
 
     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 191 matching lines @@
     DataBufferingPolicy dataBufferingPolicy() const { return m_options.dataBufferingPolicy; }
     void setDataBufferingPolicy(DataBufferingPolicy);
 
     bool isPreloaded() const { return m_preloadCount; }
     void increasePreloadCount() { ++m_preloadCount; }
     void decreasePreloadCount() { ASSERT(m_preloadCount); --m_preloadCount; }
 
     void registerHandle(ResourcePtrBase* h);
     void unregisterHandle(ResourcePtrBase* h);
 
-    bool canReuseRedirectChain() const;
-    bool mustRevalidateDueToCacheHeaders() const;
-    bool canUseCacheValidator() const;
+    bool canReuseRedirectChain();
+    bool mustRevalidateDueToCacheHeaders();
+    bool canUseCacheValidator();
     bool isCacheValidator() const { return m_resourceToRevalidate; }
     Resource* resourceToRevalidate() const { return m_resourceToRevalidate; }
     void setResourceToRevalidate(Resource*);
+    bool hasCacheControlNoStoreHeader();
 
     bool isPurgeable() const;
     bool wasPurged() const;
     bool lock();
 
     virtual void didSendData(unsigned long long /* bytesSent */, unsigned long long /* totalBytesToBeSent */) { }
     virtual void didDownloadData(int) { }
 
     double loadFinishTime() const { return m_loadFinishTime; }
 
@@ skipping 69 matching lines @@
     bool hasClient(ResourceClient* client) { return m_clients.contains(client) || m_clientsAwaitingCallback.contains(client); }
 
     struct RedirectPair {
     public:
         explicit RedirectPair(const ResourceRequest& request, const ResourceResponse& redirectResponse)
             : m_request(request)
             , m_redirectResponse(redirectResponse)
         {
         }
 
-        const ResourceRequest m_request;
-        const ResourceResponse m_redirectResponse;
+        ResourceRequest m_request;
+        ResourceResponse m_redirectResponse;
     };
     const Vector<RedirectPair>& redirectChain() const { return m_redirectChain; }
 
     virtual bool isSafeToUnlock() const { return false; }
     virtual void destroyDecodedDataIfPossible() { }
 
     ResourceRequest m_resourceRequest;
     AtomicString m_accept;
     RefPtr<ResourceLoader> m_loader;
     ResourceLoaderOptions m_options;
@@ skipping 70 matching lines @@
 const char* ResourceTypeName(Resource::Type);
 #endif
 
 #define DEFINE_RESOURCE_TYPE_CASTS(typeName) \
     DEFINE_TYPE_CASTS(typeName##Resource, Resource, resource, resource->type() == Resource::typeName, resource.type() == Resource::typeName); \
     inline typeName##Resource* to##typeName##Resource(const ResourcePtr<Resource>& ptr) { return to##typeName##Resource(ptr.get()); }
 
 }
 
 #endif