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

gm/imagefiltersclipped.cpp

Index: gm/imagefiltersclipped.cpp
diff --git a/gm/imagefiltersclipped.cpp b/gm/imagefiltersclipped.cpp
index 74bd2ad2fb1091151cbb5567078feab6a36a6838..cfe9327a448e159d9363e9a2f8dd656862bfbcaf 100644
--- a/gm/imagefiltersclipped.cpp
+++ b/gm/imagefiltersclipped.cpp
@@ -31,15 +31,15 @@ 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("imagefiltersclipped");
     }
 
-    virtual SkISize onISize() SK_OVERRIDE {
+    SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(860, 500);
     }
 
@@ -83,7 +83,7 @@ protected:
         canvas.drawCircle(x, y, radius, paint);
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         if (!fInitialized) {
             this->make_checkerboard();
             this->make_gradient_circle(64, 64);