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

gm/circles.cpp

Index: gm/circles.cpp
diff --git a/gm/circles.cpp b/gm/circles.cpp
index 6fa682c26605229041de9eb11bb400408a57f47f..b513ccba7b19e9ca834fd90d6cd5673f09be6d00 100644
--- a/gm/circles.cpp
+++ b/gm/circles.cpp
@@ -25,15 +25,15 @@ public:
     }
 
 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("circles");
     }
 
-    virtual SkISize onISize() SK_OVERRIDE {
+    SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(1200, 900);
     }
 
@@ -155,7 +155,7 @@ protected:
         }
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         // Draw a giant AA circle as the background.
         SkISize size = this->getISize();
         SkScalar giantRadius = SkTMin(SkIntToScalar(size.fWidth),