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

bench/ColorCubeBench.cpp

Index: bench/ColorCubeBench.cpp
diff --git a/bench/ColorCubeBench.cpp b/bench/ColorCubeBench.cpp
index 141edf62a4b23c9e190d33de80aee2c17bcac2e6..0d1e589d59744c7bda3e87c81037355df245b70f 100644
--- a/bench/ColorCubeBench.cpp
+++ b/bench/ColorCubeBench.cpp
@@ -27,22 +27,22 @@ public:
     }
 
 protected:
-    virtual const char* onGetName() SK_OVERRIDE {
+    const char* onGetName() SK_OVERRIDE {
         return "colorcube";
     }
 
-    virtual void onPreDraw() SK_OVERRIDE {
+    void onPreDraw() SK_OVERRIDE {
         if (!SkToBool(fCubeData)) {
             this->makeCubeData();
             this->make_bitmap();
         }
     }
 
-    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         this->test(loops, canvas);
     }
 
-    virtual SkIPoint onGetSize() SK_OVERRIDE {
+    SkIPoint onGetSize() SK_OVERRIDE {
         return SkIPoint::Make(fSize.width(), fSize.height());
     }