Check RawResourceClient destruction in RawResource::didAddClient()

third_party/WebKit/Source/core/fetch/RawResource.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 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 10 matching lines @@
 */
 
 #ifndef RawResource_h
 #define RawResource_h
 
 #include "core/CoreExport.h"
 #include "core/fetch/Resource.h"
 #include "core/fetch/ResourceClient.h"
 #include "public/platform/WebDataConsumerHandle.h"
 #include "wtf/PassOwnPtr.h"
+#include "wtf/WeakPtr.h"
 
 namespace blink {
 class FetchRequest;
 class RawResourceClient;
 class ResourceFetcher;
 class SubstituteData;
 
 class CORE_EXPORT RawResource final : public Resource {
 public:
     using ClientType = RawResourceClient;
@@ skipping 55 matching lines @@
 }
 #endif
 inline RawResource* toRawResource(Resource* resource)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!resource || isRawResource(*resource));
     return static_cast<RawResource*>(resource);
 }
 
 class CORE_EXPORT RawResourceClient : public ResourceClient {
 public:
+    RawResourceClient()
+        : m_weakFactory(this) { }
+    WeakPtr<RawResourceClient> createWeakPtr() { return m_weakFactory.createWeakPtr(); }
     ~RawResourceClient() override {}
     static bool isExpectedType(ResourceClient* client) { return client->getResourceClientType() == RawResourceType; }
     ResourceClientType getResourceClientType() const final { return RawResourceType; }
 
     virtual void dataSent(Resource*, unsigned long long /* bytesSent */, unsigned long long /* totalBytesToBeSent */) { }
     virtual void responseReceived(Resource*, const ResourceResponse&, PassOwnPtr<WebDataConsumerHandle>) { }
     virtual void setSerializedCachedMetadata(Resource*, const char*, size_t) { }
     virtual void dataReceived(Resource*, const char* /* data */, size_t /* length */) { }
     virtual void redirectReceived(Resource*, ResourceRequest&, const ResourceResponse&) { }
     virtual void redirectBlocked() {}
     virtual void dataDownloaded(Resource*, int) { }
     virtual void didReceiveResourceTiming(Resource*, const ResourceTimingInfo&) { }
+
+private:
+    WeakPtrFactory<RawResourceClient> m_weakFactory;
 };
 
 } // namespace blink
 
 #endif // RawResource_h