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

gm/drawlooper.cpp

Index: gm/drawlooper.cpp
diff --git a/gm/drawlooper.cpp b/gm/drawlooper.cpp
index a1b55bbc3f0e177c261460b94994143e49dc7d05..1d16fb5955f76369e33e3828684f86c7ec18855b 100644
--- a/gm/drawlooper.cpp
+++ b/gm/drawlooper.cpp
@@ -31,11 +31,11 @@ protected:
         return SkISize::Make(520, 160);
     }
 
-    virtual SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() SK_OVERRIDE {
         return SkString("drawlooper");
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         this->init();
 
         SkPaint  paint;