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

gm/bitmapscroll.cpp

Index: gm/bitmapscroll.cpp
diff --git a/gm/bitmapscroll.cpp b/gm/bitmapscroll.cpp
index dff5226a2d7ab015d5e7e0dcc23c802491edf23f..d5c30511724d1662d46da892a0d60c76480c0248 100644
--- a/gm/bitmapscroll.cpp
+++ b/gm/bitmapscroll.cpp
@@ -59,19 +59,19 @@ public:
     }
 
 protected:
-    virtual SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() SK_OVERRIDE {
         return SkString("bitmapscroll");
     }
 
-    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+    uint32_t onGetFlags() const SK_OVERRIDE {
         return kSkipTiled_Flag;
     }
 
-    virtual SkISize onISize() SK_OVERRIDE {
+    SkISize onISize() SK_OVERRIDE {
       return SkISize::Make(800, 600);
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         this->init();
         SkIRect scrollCenterRegion = SkIRect::MakeXYWH(
             quarterWidth, quarterHeight, quarterWidth*2+1, quarterHeight*2+1);