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

gm/picture.cpp

 /*
  * Copyright 2014 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 "SkPaint.h"
 #include "SkPictureRecorder.h"
@@ skipping 24 matching lines @@
     return rec.endRecording();
 }
 
 // Exercise the optional arguments to drawPicture
 //
 class PictureGM : public skiagm::GM {
 public:
     PictureGM() : fPicture(make_picture()) {}
 
 protected:
-    virtual SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() SK_OVERRIDE {
         return SkString("pictures");
     }
 
-    virtual SkISize onISize() SK_OVERRIDE {
+    SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(450, 120);
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         canvas->translate(10, 10);
 
         SkMatrix matrix;
         SkPaint paint;
 
         canvas->drawPicture(fPicture);
         
         matrix.setTranslate(110, 0);
         canvas->drawPicture(fPicture, &matrix, NULL);
         
         matrix.postTranslate(110, 0);
         canvas->drawPicture(fPicture, &matrix, &paint);
 
         paint.setAlpha(0x80);
         matrix.postTranslate(110, 0);
         canvas->drawPicture(fPicture, &matrix, &paint);
     }
 
 private:
     SkAutoTUnref<SkPicture> fPicture;
 
     typedef skiagm::GM INHERITED;
 };
 
 DEF_GM( return SkNEW(PictureGM); )