Revalidation header blacklisting should be case-insensitive.

Source/core/fetch/Resource.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) 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
@@ skipping 63 matching lines @@
 // this list, also grabbed from Chromium's net/http/http_response_headers.cc.
 const char* const headerPrefixesToIgnoreAfterRevalidation[] = {
     "content-",
     "x-content-",
     "x-webkit-"
 };
 
 static inline bool shouldUpdateHeaderAfterRevalidation(const AtomicString& header)
 {
     for (size_t i = 0; i < WTF_ARRAY_LENGTH(headersToIgnoreAfterRevalidation); i++) {
-        if (header == headersToIgnoreAfterRevalidation[i])
+        if (equalIgnoringCase(header, headersToIgnoreAfterRevalidation[i]))
             return false;
     }
     for (size_t i = 0; i < WTF_ARRAY_LENGTH(headerPrefixesToIgnoreAfterRevalidation); i++) {
-        if (header.startsWith(headerPrefixesToIgnoreAfterRevalidation[i]))
+        if (header.startsWith(headerPrefixesToIgnoreAfterRevalidation[i], false))
             return false;
     }
     return true;
 }
 
 DEFINE_DEBUG_ONLY_GLOBAL(RefCountedLeakCounter, cachedResourceLeakCounter, ("Resource"));
 
 Resource::Resource(const ResourceRequest& request, Type type)
     : m_resourceRequest(request)
     , m_responseTimestamp(currentTime())
@@ skipping 770 matching lines @@
     Vector<ResourcePtr<Resource> > resources;
     for (HashSet<Resource*>::iterator it = m_resourcesWithPendingClients.begin(); it != end; ++it)
         resources.append(*it);
     m_resourcesWithPendingClients.clear();
     for (size_t i = 0; i < resources.size(); i++)
         resources[i]->finishPendingClients();
 }
 
 }