Fix virtual/override/final usage in Source/core/{fetch,loader,streams,xmlhttprequest}/.

Source/core/loader/WorkerThreadableLoader.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 41 matching lines @@
 
     class WorkerThreadableLoader final : public ThreadableLoader, private ThreadableLoaderClientWrapper::ResourceTimingClient {
         WTF_MAKE_FAST_ALLOCATED(WorkerThreadableLoader);
     public:
         static void loadResourceSynchronously(WorkerGlobalScope&, const ResourceRequest&, ThreadableLoaderClient&, const ThreadableLoaderOptions&, const ResourceLoaderOptions&);
         static PassRefPtr<WorkerThreadableLoader> create(WorkerGlobalScope& workerGlobalScope, PassRefPtr<ThreadableLoaderClientWrapper> clientWrapper, PassOwnPtr<ThreadableLoaderClient> clientBridge, const ResourceRequest& request, const ThreadableLoaderOptions& options, const ResourceLoaderOptions& resourceLoaderOptions)
         {
             return adoptRef(new WorkerThreadableLoader(workerGlobalScope, clientWrapper, clientBridge, request, options, resourceLoaderOptions));
         }
 
-        virtual ~WorkerThreadableLoader();
+        ~WorkerThreadableLoader() override;
 
-        virtual void overrideTimeout(unsigned long timeout) override;
+        void overrideTimeout(unsigned long timeout) override;
 
-        virtual void cancel() override;
+        void cancel() override;
 
     private:
         // Creates a loader on the main thread and bridges communication between
         // the main thread and the worker context's thread where WorkerThreadableLoader runs.
         //
         // Regarding the bridge and lifetimes of items used in callbacks, there are a few cases:
         //
         // all cases. All tasks posted from the worker context's thread are ok because
         //    the last task posted always is "mainThreadDestroy", so MainThreadBridge is
         //    around for all tasks that use it on the main thread.
@@ skipping 15 matching lines @@
             void overrideTimeout(unsigned long timeoutMilliseconds);
             void cancel();
             void destroy();
 
         private:
             // Executed on the worker context's thread.
             void clearClientWrapper();
 
             // All executed on the main thread.
             void mainThreadDestroy(ExecutionContext*);
-            virtual ~MainThreadBridge();
+            ~MainThreadBridge() override;
 
             void mainThreadCreateLoader(PassOwnPtr<CrossThreadResourceRequestData>, ThreadableLoaderOptions, ResourceLoaderOptions, const ReferrerPolicy, const String& outgoingReferrer, ExecutionContext*);
             void mainThreadOverrideTimeout(unsigned long timeoutMilliseconds, ExecutionContext*);
             void mainThreadCancel(ExecutionContext*);
-            virtual void didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent) override;
-            virtual void didReceiveResponse(unsigned long identifier, const ResourceResponse&, PassOwnPtr<WebDataConsumerHandle>) override;
-            virtual void didReceiveData(const char*, unsigned dataLength) override;
-            virtual void didDownloadData(int dataLength) override;
-            virtual void didReceiveCachedMetadata(const char*, int dataLength) override;
-            virtual void didFinishLoading(unsigned long identifier, double finishTime) override;
-            virtual void didFail(const ResourceError&) override;
-            virtual void didFailAccessControlCheck(const ResourceError&) override;
-            virtual void didFailRedirectCheck() override;
-            virtual void didReceiveResourceTiming(const ResourceTimingInfo&) override;
+            void didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent) override;
+            void didReceiveResponse(unsigned long identifier, const ResourceResponse&, PassOwnPtr<WebDataConsumerHandle>) override;
+            void didReceiveData(const char*, unsigned dataLength) override;
+            void didDownloadData(int dataLength) override;
+            void didReceiveCachedMetadata(const char*, int dataLength) override;
+            void didFinishLoading(unsigned long identifier, double finishTime) override;
+            void didFail(const ResourceError&) override;
+            void didFailAccessControlCheck(const ResourceError&) override;
+            void didFailRedirectCheck() override;
+            void didReceiveResourceTiming(const ResourceTimingInfo&) override;
 
             // Only to be used on the main thread.
             RefPtr<ThreadableLoader> m_mainThreadLoader;
             OwnPtr<ThreadableLoaderClient> m_clientBridge;
 
             // ThreadableLoaderClientWrapper is to be used on the worker context thread.
             // The ref counting is done on either thread.
             RefPtr<ThreadableLoaderClientWrapper> m_workerClientWrapper;
 
             // Used on the worker context thread.
             RefPtr<WorkerLoaderProxy> m_loaderProxy;
         };
 
         WorkerThreadableLoader(WorkerGlobalScope&, PassRefPtr<ThreadableLoaderClientWrapper>, PassOwnPtr<ThreadableLoaderClient>, const ResourceRequest&, const ThreadableLoaderOptions&, const ResourceLoaderOptions&);
 
         void didReceiveResourceTiming(const ResourceTimingInfo&) override;
 
         RefPtrWillBePersistent<WorkerGlobalScope> m_workerGlobalScope;
         RefPtr<ThreadableLoaderClientWrapper> m_workerClientWrapper;
         MainThreadBridge& m_bridge;
     };
 
 } // namespace blink
 
 #endif // WorkerThreadableLoader_h