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

gm/colortype.cpp

Index: gm/colortype.cpp
diff --git a/gm/colortype.cpp b/gm/colortype.cpp
index 1d6dfad4699a7a39f6dbe6e9c552282aaf256faf..9b541fa857b288c19101a6ae47c4b3c18b2096c3 100644
--- a/gm/colortype.cpp
+++ b/gm/colortype.cpp
@@ -40,15 +40,15 @@ public:
     }
 
 protected:
-    virtual SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() SK_OVERRIDE {
         return SkString("colortype");
     }
 
-    virtual SkISize onISize() SK_OVERRIDE {
+    SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(640, 480);
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setTypeface(fColorType);