replace OVERRIDE and FINAL with override and final in extensions/

extensions/browser/extension_icon_image.cc

Index: extensions/browser/extension_icon_image.cc
diff --git a/extensions/browser/extension_icon_image.cc b/extensions/browser/extension_icon_image.cc
index 14ba2904016edd51281a38affe55faf01dddbd71..851d82459c3d983c38005f95668185fe2e8ba135 100644
--- a/extensions/browser/extension_icon_image.cc
+++ b/extensions/browser/extension_icon_image.cc
@@ -59,7 +59,7 @@ class BlankImageSource : public gfx::CanvasImageSource {
 
  private:
   // gfx::CanvasImageSource overrides:
-  virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
+  virtual void Draw(gfx::Canvas* canvas) override {
     canvas->DrawColor(SkColorSetARGB(0, 0, 0, 0));
   }
 
@@ -82,7 +82,7 @@ class IconImage::Source : public gfx::ImageSkiaSource {
 
  private:
   // gfx::ImageSkiaSource overrides:
-  virtual gfx::ImageSkiaRep GetImageForScale(float scale) OVERRIDE;
+  virtual gfx::ImageSkiaRep GetImageForScale(float scale) override;
 
   // Used to load images, possibly asynchronously. NULLed out when the IconImage
   // is destroyed.