Remove SharedBuffer::unlock() and keep Resource's SharedBuffer always locked

third_party/WebKit/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 203 matching lines @@
     bool canUseCacheValidator();
     bool isCacheValidator() const { return m_isRevalidating; }
     bool hasCacheControlNoStoreHeader() const;
     bool hasVaryHeader() const;
     virtual bool mustRefetchDueToIntegrityMetadata(const FetchRequest& request) const { return false; }
 
     double currentAge() const;
     double freshnessLifetime();
     double stalenessLifetime();
 
-    bool isPurgeable() const;
-    bool lock();
-
     void setCacheIdentifier(const String& cacheIdentifier) { m_cacheIdentifier = cacheIdentifier; }
     String cacheIdentifier() const { return m_cacheIdentifier; }
 
     virtual void didSendData(unsigned long long /* bytesSent */, unsigned long long /* totalBytesToBeSent */) { }
     virtual void didDownloadData(int) { }
 
     double loadFinishTime() const { return m_loadFinishTime; }
 
     void addToEncodedBodyLength(int value) { m_response.addToEncodedBodyLength(value); }
     void addToDecodedBodyLength(int value) { m_response.addToDecodedBodyLength(value); }
@@ skipping 36 matching lines @@
             : m_request(request)
             , m_redirectResponse(redirectResponse)
         {
         }
 
         ResourceRequest m_request;
         ResourceResponse m_redirectResponse;
     };
     const Vector<RedirectPair>& redirectChain() const { return m_redirectChain; }
 
-    virtual bool isSafeToUnlock() const { return false; }
     virtual void destroyDecodedDataIfPossible() { }
 
     virtual void markClientsAndObserversFinished();
 
     // Returns the memory dump name used for tracing. See Resource::onMemoryDump.
     String getMemoryDumpName() const;
 
     const HashCountedSet<ResourceClient*>& clients() const { return m_clients; }
     DataBufferingPolicy dataBufferingPolicy() const { return m_options.dataBufferingPolicy; }
 
     void setCachePolicyBypassingCache();
     void setLoFiStateOff();
 
     SharedBuffer* data() const { return m_data.get(); }
     void clearData() { m_data.clear(); }
 
 private:
     class ResourceCallback;
     class CachedMetadataHandlerImpl;
     class ServiceWorkerResponseCachedMetadataHandler;
 
     void cancelTimerFired(TimerBase*);
 
     void revalidationSucceeded(const ResourceResponse&);
     void revalidationFailed();
 
     size_t calculateOverheadSize() const;
 
-    bool unlock();
-
     String reasonNotDeletable() const;
 
     Member<CachedMetadataHandlerImpl> m_cacheHandler;
     RefPtr<SecurityOrigin> m_fetcherSecurityOrigin;
 
     ResourceError m_error;
 
     double m_loadFinishTime;
 
     unsigned long m_identifier;
@@ skipping 52 matching lines @@
 
     Resource::Type m_type;
 };
 
 #define DEFINE_RESOURCE_TYPE_CASTS(typeName) \
     DEFINE_TYPE_CASTS(typeName##Resource, Resource, resource, resource->getType() == Resource::typeName, resource.getType() == Resource::typeName);
 
 } // namespace blink
 
 #endif