Update platform classes to use OVERRIDE / FINAL when needed

Source/platform/image-decoders/ico/ICOImageDecoder.h

 /*
  * Copyright (c) 2008, 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 26 matching lines @@
 
 class PNGImageDecoder;
 
 // This class decodes the ICO and CUR image formats.
 class PLATFORM_EXPORT ICOImageDecoder : public ImageDecoder {
 public:
     ICOImageDecoder(ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption, size_t maxDecodedBytes);
     virtual ~ICOImageDecoder();
 
     // ImageDecoder
-    virtual String filenameExtension() const { return "ico"; }
-    virtual void setData(SharedBuffer*, bool allDataReceived);
-    virtual bool isSizeAvailable();
-    virtual IntSize size() const;
-    virtual IntSize frameSizeAtIndex(size_t) const;
-    virtual bool setSize(unsigned width, unsigned height);
-    virtual size_t frameCount();
-    virtual ImageFrame* frameBufferAtIndex(size_t);
+    virtual String filenameExtension() const OVERRIDE { return "ico"; }
+    virtual void setData(SharedBuffer*, bool allDataReceived) OVERRIDE;
+    virtual bool isSizeAvailable() OVERRIDE;
+    virtual IntSize size() const OVERRIDE;
+    virtual IntSize frameSizeAtIndex(size_t) const OVERRIDE;
+    virtual bool setSize(unsigned width, unsigned height) OVERRIDE;
+    virtual size_t frameCount() OVERRIDE;
+    virtual ImageFrame* frameBufferAtIndex(size_t) OVERRIDE;
     // CAUTION: setFailed() deletes all readers and decoders.  Be careful to
     // avoid accessing deleted memory, especially when calling this from
     // inside BMPImageReader!
-    virtual bool setFailed();
-    virtual bool hotSpot(IntPoint&) const;
+    virtual bool setFailed() OVERRIDE;
+    virtual bool hotSpot(IntPoint&) const OVERRIDE;
 
 private:
     enum ImageType {
         Unknown,
         BMP,
         PNG,
     };
 
     enum FileType {
         ICON = 1,
@@ skipping 77 matching lines @@
     PNGDecoders m_pngDecoders;
 
     // Valid only while a BMPImageReader is decoding, this holds the size
     // for the particular entry being decoded.
     IntSize m_frameSize;
 };
 
 } // namespace WebCore
 
 #endif