Fix virtual/override/final usage in Source/web/.

Source/web/SharedWorkerRepositoryClientImpl.h

Index: Source/web/SharedWorkerRepositoryClientImpl.h
diff --git a/Source/web/SharedWorkerRepositoryClientImpl.h b/Source/web/SharedWorkerRepositoryClientImpl.h
index ad1cea2b8301767e5421837febb5ef3cbb8e5c0a..65a76076b1b3123856d65d4e625f3e2a62317211 100644
--- a/Source/web/SharedWorkerRepositoryClientImpl.h
+++ b/Source/web/SharedWorkerRepositoryClientImpl.h
@@ -48,10 +48,10 @@ public:
         return adoptPtr(new SharedWorkerRepositoryClientImpl(client));
     }
 
-    virtual ~SharedWorkerRepositoryClientImpl() { }
+    ~SharedWorkerRepositoryClientImpl() override { }
 
-    virtual void connect(PassRefPtrWillBeRawPtr<SharedWorker>, PassOwnPtr<WebMessagePortChannel>, const KURL&, const String& name, ExceptionState&) override;
-    virtual void documentDetached(Document*) override;
+    void connect(PassRefPtrWillBeRawPtr<SharedWorker>, PassOwnPtr<WebMessagePortChannel>, const KURL&, const String& name, ExceptionState&) override;
+    void documentDetached(Document*) override;
 
 private:
     explicit SharedWorkerRepositoryClientImpl(WebSharedWorkerRepositoryClient*);