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

Source/core/fetch/ImageResource.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 36 matching lines @@
     friend class MemoryCache;
 
 public:
     typedef ImageResourceClient ClientType;
 
     static ResourcePtr<ImageResource> fetch(FetchRequest&, ResourceFetcher*);
 
     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.
     bool hasImage() const { return m_image.get(); }
     // Side effect: ensures decoded image is in cache, therefore should only be called when about to draw the image.
     // FIXME: Decoding image on the main thread is expensive, so rather than forcing decode, consider returning false
     // when image is not decoded yet, as we do in case of deferred decoding.
     bool currentFrameKnownToBeOpaque(const LayoutObject*);
 
     static std::pair<blink::Image*, float> brokenImage(float deviceScaleFactor); // Returns an image and the image's resolution scale factor.
@@ skipping 15 matching lines @@
         IntrinsicCorrectedToDPR, // Report the intrinsic size corrected to account for image density.
     };
     // This method takes a zoom multiplier that can be used to increase the natural size of the image by the zoom.
     LayoutSize imageSizeForLayoutObject(const LayoutObject*, float multiplier, SizeType = NormalSize); // returns the size of the complete image.
     void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio);
 
     bool isAccessAllowed(SecurityOrigin*);
 
     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*);
 
     class ImageResourceFactory : public ResourceFactory {
     public:
         ImageResourceFactory()
             : ResourceFactory(Resource::Image) { }
 
         Resource* create(const ResourceRequest& request, const String&) const override
@@ skipping 22 matching lines @@
 
     RefPtr<blink::Image> m_image;
     bool m_hasDevicePixelRatioHeaderValue;
 };
 
 DEFINE_RESOURCE_TYPE_CASTS(Image);
 
 }
 
 #endif