replace OVERRIDE and FINAL with override and final in ui/

ui/views/background.cc

Index: ui/views/background.cc
diff --git a/ui/views/background.cc b/ui/views/background.cc
index bb2ddd0928e6ca3dd8fa362df3e1edc4e7df19a5..d2d64bb6d70aa1d4ecd2b681ebbedf17404616f5 100644
--- a/ui/views/background.cc
+++ b/ui/views/background.cc
@@ -22,7 +22,7 @@ class SolidBackground : public Background {
     SetNativeControlColor(color);
   }
 
-  virtual void Paint(gfx::Canvas* canvas, View* view) const OVERRIDE {
+  virtual void Paint(gfx::Canvas* canvas, View* view) const override {
     // Fill the background. Note that we don't constrain to the bounds as
     // canvas is already clipped for us.
     canvas->DrawColor(get_color());
@@ -45,7 +45,7 @@ class BackgroundPainter : public Background {
   }
 
 
-  virtual void Paint(gfx::Canvas* canvas, View* view) const OVERRIDE {
+  virtual void Paint(gfx::Canvas* canvas, View* view) const override {
     Painter::PaintPainterAt(canvas, painter_, view->GetLocalBounds());
   }