General code cleanup of ChromeClient-related classes.

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 25ec85c0b4696c2325a67d8cb52f67781a2bcc65..0592bae67ca8a0e39cca08cdabb7a8fe51dbfa54 100644
--- a/Source/core/svg/graphics/SVGImageChromeClient.h
+++ b/Source/core/svg/graphics/SVGImageChromeClient.h
@@ -40,14 +40,14 @@ class SVGImageChromeClient final : public EmptyChromeClient {
     WTF_MAKE_NONCOPYABLE(SVGImageChromeClient); WTF_MAKE_FAST_ALLOCATED(SVGImageChromeClient);
 public:
     explicit SVGImageChromeClient(SVGImage*);
-    virtual bool isSVGImageChromeClient() const override;
+    bool isSVGImageChromeClient() const override;

[yosin_UTC9, 2015/06/03 07:15:27]

Q: Do you recommend |override| than |final| in |final| class?

[tkent, 2015/06/03 07:22:19]

I have no opinion about it.
Google C++ style guide doesn't define it.  So either of |override| or |final|
should be ok.

 
     SVGImage* image() const { return m_image; }
 
 private:
-    virtual void chromeDestroyed() override;
-    virtual void invalidateRect(const IntRect&) override;
-    virtual void scheduleAnimation() override;
+    void chromeDestroyed() override;
+    void invalidateRect(const IntRect&) override;
+    void scheduleAnimation() override;
 
     void animationTimerFired(Timer<SVGImageChromeClient>*);