Oilpan: fix build after r185817.

Source/core/fetch/ResourceFetcher.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) 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
@@ skipping 1293 matching lines @@
         bool deleted = resource->deleteIfPossible();
         if (!deleted && resource->preloadResult() == Resource::PreloadNotReferenced)
             memoryCache()->remove(resource);
     }
     m_preloads.clear();
 }
 
 void ResourceFetcher::didFinishLoading(Resource* resource, double finishTime, int64_t encodedDataLength)
 {
     TRACE_EVENT_ASYNC_END0("net", "Resource", resource);
-    RefPtr<Document> protectDocument(m_document);
+    RefPtrWillBeRawPtr<Document> protectDocument(document());
     RefPtr<DocumentLoader> protectDocumentLoader(m_documentLoader);
 
     if (resource && resource->response().isHTTP() && resource->response().httpStatusCode() < 400 && document()) {
         ResourceTimingInfoMap::iterator it = m_resourceTimingInfoMap.find(resource);
         if (it != m_resourceTimingInfoMap.end()) {
             RefPtr<ResourceTimingInfo> info = it->value;
             m_resourceTimingInfoMap.remove(it);
             populateResourceTiming(info.get(), resource, false);
             reportResourceTiming(info.get(), document(), resource->type() == Resource::MainResource);
         }
@@ skipping 250 matching lines @@
 
 void ResourceFetcher::trace(Visitor* visitor)
 {
     visitor->trace(m_document);
     visitor->trace(m_loaders);
     visitor->trace(m_multipartLoaders);
     ResourceLoaderHost::trace(visitor);
 }
 
 }