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

gm/bitmapsource.cpp

Index: gm/bitmapsource.cpp
diff --git a/gm/bitmapsource.cpp b/gm/bitmapsource.cpp
index f6badde89ec8d15fa387f763b63db1c47ea94c3c..1c35a0bdc9db08900e140e9e57def11130b9d4a0 100644
--- a/gm/bitmapsource.cpp
+++ b/gm/bitmapsource.cpp
@@ -17,7 +17,7 @@ public:
     }
 
 protected:
-    virtual SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() SK_OVERRIDE {
         return SkString("bitmapsource");
     }
 
@@ -34,9 +34,9 @@ protected:
         canvas.drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint);
     }
 
-    virtual SkISize onISize() SK_OVERRIDE { return SkISize::Make(500, 150); }
+    SkISize onISize() SK_OVERRIDE { return SkISize::Make(500, 150); }
 
-    virtual void onOnceBeforeDraw() SK_OVERRIDE {
+    void onOnceBeforeDraw() SK_OVERRIDE {
         this->makeBitmap();
     }
 
@@ -49,7 +49,7 @@ protected:
         canvas->restore();
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         canvas->clear(0x00000000);
         {
             SkRect srcRect = SkRect::MakeXYWH(20, 20, 30, 30);