Replacing the OVERRIDE with override and FINAL with final

Source/platform/graphics/RegionTracker.h

Index: Source/platform/graphics/RegionTracker.h
diff --git a/Source/platform/graphics/RegionTracker.h b/Source/platform/graphics/RegionTracker.h
index e248f1b78059c5122c5f493d83f62fc3fd181f2c..a824e092d377ca40bbfcf582e33dd1a0fc538317 100644
--- a/Source/platform/graphics/RegionTracker.h
+++ b/Source/platform/graphics/RegionTracker.h
@@ -49,7 +49,7 @@ enum RegionTrackingMode {
 
 // This class is an encapsulation of functionality for GraphicsContext, and its methods are mirrored
 // there for the outside world. It tracks paints and computes what area will be opaque.
-class PLATFORM_EXPORT RegionTracker FINAL {
+class PLATFORM_EXPORT RegionTracker final {
 public:
     RegionTracker();