Improve DEFINE_STATIC_LOCAL()'s handling of Blink GCed objects.

third_party/WebKit/Source/core/fetch/Resource.h

Index: third_party/WebKit/Source/core/fetch/Resource.h
diff --git a/third_party/WebKit/Source/core/fetch/Resource.h b/third_party/WebKit/Source/core/fetch/Resource.h
index 924265821a62d245b9455f9749693ad7b45f9604..121252fe4622c4e18f37afe47b0e5b861adbfaf6 100644
--- a/third_party/WebKit/Source/core/fetch/Resource.h
+++ b/third_party/WebKit/Source/core/fetch/Resource.h
@@ -272,20 +272,6 @@ protected:
     HashCountedSet<ResourceClient*> m_clientsAwaitingCallback;
     HashCountedSet<ResourceClient*> m_finishedClients;
 
-    class ResourceCallback : public GarbageCollectedFinalized<ResourceCallback> {
-    public:
-        static ResourceCallback* callbackHandler();
-        DECLARE_TRACE();
-        void schedule(Resource*);
-        void cancel(Resource*);
-        bool isScheduled(Resource*) const;
-    private:
-        ResourceCallback();
-        void runTask();
-        OwnPtr<CancellableTaskFactory> m_callbackTaskFactory;
-        HeapHashSet<Member<Resource>> m_resourcesWithPendingClients;
-    };
-
     bool hasClient(ResourceClient* client) { return m_clients.contains(client) || m_clientsAwaitingCallback.contains(client) || m_finishedClients.contains(client); }
 
     struct RedirectPair {
@@ -324,6 +310,8 @@ protected:
 
 private:
     class CacheHandler;
+    class ResourceCallback;
+
     void cancelTimerFired(Timer<Resource>*);
 
     void revalidationSucceeded(const ResourceResponse&);