Cleanup: Another round of override fixes.

gm/stringart.cpp

Index: gm/stringart.cpp
diff --git a/gm/stringart.cpp b/gm/stringart.cpp
index 24d7b1444258769221da785d26cfae1524bfe6b1..2d6b737434947b6883661463ed00f43266596742 100644
--- a/gm/stringart.cpp
+++ b/gm/stringart.cpp
@@ -27,15 +27,15 @@ protected:
         return kSkipTiled_Flag;
     }
 
-    virtual SkString onShortName() {
+    virtual SkString onShortName() SK_OVERRIDE {
         return SkString("stringart");
     }
 
-    virtual SkISize onISize() {
+    virtual SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(kWidth, kHeight);
     }
 
-    virtual void onDraw(SkCanvas* canvas) {
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         SkScalar angle = kAngle*SK_ScalarPI + SkScalarHalf(SK_ScalarPI);
         SkScalar size = SkIntToScalar(SkMin32(kWidth, kHeight));
         SkPoint center = SkPoint::Make(SkScalarHalf(kWidth), SkScalarHalf(kHeight));