Update SVG classes to use OVERRIDE / FINAL when needed

Source/core/svg/graphics/SVGImageChromeClient.h

Index: Source/core/svg/graphics/SVGImageChromeClient.h
diff --git a/Source/core/svg/graphics/SVGImageChromeClient.h b/Source/core/svg/graphics/SVGImageChromeClient.h
index 76a4a9c56be79f1666bf3d803c61a7b07e3ebe5f..41a894bb6a6b221001b6587b2bc6b110e88bfd3e 100644
--- a/Source/core/svg/graphics/SVGImageChromeClient.h
+++ b/Source/core/svg/graphics/SVGImageChromeClient.h
@@ -34,7 +34,7 @@
 
 namespace WebCore {
 
-class SVGImageChromeClient : public EmptyChromeClient {
+class SVGImageChromeClient FINAL : public EmptyChromeClient {
     WTF_MAKE_NONCOPYABLE(SVGImageChromeClient); WTF_MAKE_FAST_ALLOCATED;
 public:
     SVGImageChromeClient(SVGImage* image)
@@ -42,16 +42,16 @@ public:
     {
     }
 
-    virtual bool isSVGImageChromeClient() const { return true; }
+    virtual bool isSVGImageChromeClient() const OVERRIDE { return true; }
     SVGImage* image() const { return m_image; }
 
 private:
-    virtual void chromeDestroyed()
+    virtual void chromeDestroyed() OVERRIDE
     {
         m_image = 0;
     }
 
-    virtual void invalidateContentsAndRootView(const IntRect& r)
+    virtual void invalidateContentsAndRootView(const IntRect& r) OVERRIDE
     {
         // If m_image->m_page is null, we're being destructed, don't fire changedInRect() in that case.
         if (m_image && m_image->imageObserver() && m_image->m_page)