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

gm/image.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkSurface.h"
 #include "SkCanvas.h"
@@ skipping 173 matching lines @@
         canvas->translate(80, 0);
         test_surface(canvas, surf1, true);
 #if SK_SUPPORT_GPU
         if (ctx) {
             canvas->translate(80, 0);
             test_surface(canvas, surf4, true);
         }
 #endif
     }
 
-    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+    uint32_t onGetFlags() const SK_OVERRIDE {
         return GM::kSkipPicture_Flag | GM::kSkipPipe_Flag;
     }
 
 private:
     typedef skiagm::GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static skiagm::GM* MyFactory(void*) { return new ImageGM; }
 static skiagm::GMRegistry reg(MyFactory);