Add missing SK_OVERRIDE

gm/cmykjpeg.cpp

Index: gm/cmykjpeg.cpp
diff --git a/gm/cmykjpeg.cpp b/gm/cmykjpeg.cpp
index 061c4423347f553bcd78810f7845f9bf91936923..75be712821e9b9b785078bc44eec87dc07e6abd4 100644
--- a/gm/cmykjpeg.cpp
+++ b/gm/cmykjpeg.cpp
@@ -42,15 +42,15 @@ protected:
         }
     }
 
-    virtual SkString onShortName() {
+    virtual SkString onShortName() SK_OVERRIDE {
         return SkString("cmykjpeg");
     }
 
-    virtual SkISize onISize() {
+    virtual SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(640, 480);
     }
 
-    virtual void onDraw(SkCanvas* canvas) {
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
 
         canvas->translate(20*SK_Scalar1, 20*SK_Scalar1);
         canvas->drawBitmap(fBitmap, 0, 0);