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

Source/core/fetch/ImageResource.h

Index: Source/core/fetch/ImageResource.h
diff --git a/Source/core/fetch/ImageResource.h b/Source/core/fetch/ImageResource.h
index 7247e7cd9d25f7f962a7cd6c8d77fb9d7ea4d3fb..7a6a0b4f4b09c0cbccf245548a2a26b3f2ca528c 100644
--- a/Source/core/fetch/ImageResource.h
+++ b/Source/core/fetch/ImageResource.h
@@ -54,9 +54,9 @@ public:
     ImageResource(blink::Image*);
     // Exposed for testing
     ImageResource(const ResourceRequest&, blink::Image*);
-    virtual ~ImageResource();
+    ~ImageResource() override;
 
-    virtual void load(ResourceFetcher*, const ResourceLoaderOptions&) override;
+    void load(ResourceFetcher*, const ResourceLoaderOptions&) override;
 
     blink::Image* image(); // Returns the nullImage() if the image is not available yet.
     blink::Image* imageForLayoutObject(const LayoutObject*); // Returns the nullImage() if the image is not available yet.
@@ -92,33 +92,33 @@ public:
 
     void updateImageAnimationPolicy();
 
-    virtual void didAddClient(ResourceClient*) override;
-    virtual void didRemoveClient(ResourceClient*) override;
+    void didAddClient(ResourceClient*) override;
+    void didRemoveClient(ResourceClient*) override;
 
-    virtual void allClientsRemoved() override;
+    void allClientsRemoved() override;
 
-    virtual void appendData(const char*, unsigned) override;
-    virtual void error(Resource::Status) override;
-    virtual void responseReceived(const ResourceResponse&, PassOwnPtr<WebDataConsumerHandle>) override;
-    virtual void finishOnePart() override;
+    void appendData(const char*, unsigned) override;
+    void error(Resource::Status) override;
+    void responseReceived(const ResourceResponse&, PassOwnPtr<WebDataConsumerHandle>) override;
+    void finishOnePart() override;
 
     // For compatibility, images keep loading even if there are HTTP errors.
-    virtual bool shouldIgnoreHTTPStatusCodeErrors() const override { return true; }
+    bool shouldIgnoreHTTPStatusCodeErrors() const override { return true; }
 
-    virtual bool isImage() const override { return true; }
-    virtual bool stillNeedsLoad() const override { return !errorOccurred() && status() == Unknown && !isLoading(); }
+    bool isImage() const override { return true; }
+    bool stillNeedsLoad() const override { return !errorOccurred() && status() == Unknown && !isLoading(); }
 
     // ImageObserver
-    virtual void decodedSizeChanged(const blink::Image*, int delta) override;
-    virtual void didDraw(const blink::Image*) override;
+    void decodedSizeChanged(const blink::Image*, int delta) override;
+    void didDraw(const blink::Image*) override;
 
-    virtual bool shouldPauseAnimation(const blink::Image*) override;
-    virtual void animationAdvanced(const blink::Image*) override;
-    virtual void changedInRect(const blink::Image*, const IntRect&) override;
+    bool shouldPauseAnimation(const blink::Image*) override;
+    void animationAdvanced(const blink::Image*) override;
+    void changedInRect(const blink::Image*, const IntRect&) override;
 
 protected:
-    virtual bool isSafeToUnlock() const override;
-    virtual void destroyDecodedDataIfPossible() override;
+    bool isSafeToUnlock() const override;
+    void destroyDecodedDataIfPossible() override;
 
 private:
     static void preCacheDataURIImage(const FetchRequest&, ResourceFetcher*);