Fix up all the easy virtual ... SK_OVERRIDE cases.

gm/stringart.cpp

Index: gm/stringart.cpp
diff --git a/gm/stringart.cpp b/gm/stringart.cpp
index 2d6b737434947b6883661463ed00f43266596742..050d78f2d855d2d3b377b9a8d460313c3bae8a27 100644
--- a/gm/stringart.cpp
+++ b/gm/stringart.cpp
@@ -23,19 +23,19 @@ public:
     StringArtGM() {}
 
 protected:
-    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+    uint32_t onGetFlags() const SK_OVERRIDE {
         return kSkipTiled_Flag;
     }
 
-    virtual SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() SK_OVERRIDE {
         return SkString("stringart");
     }
 
-    virtual SkISize onISize() SK_OVERRIDE {
+    SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(kWidth, kHeight);
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    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));