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

bench/PictureNestingBench.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 "Benchmark.h"
 #include "SkCanvas.h"
 #include "SkColor.h"
 #include "SkNullCanvas.h"
 #include "SkPaint.h"
 #include "SkPicture.h"
 #include "SkPictureRecorder.h"
 #include "SkString.h"
 
 class PictureNesting : public Benchmark {
 public:
     PictureNesting(const char* name, int maxLevel, int maxPictureLevel)
         : fMaxLevel(maxLevel)
         , fMaxPictureLevel(maxPictureLevel) {
         fName.printf("picture_nesting_%s_%d", name, this->countPics());
         fPaint.setColor(SK_ColorRED);
         fPaint.setAntiAlias(true);
         fPaint.setStyle(SkPaint::kStroke_Style);
     }
 
 protected:
-    virtual const char* onGetName() SK_OVERRIDE {
+    const char* onGetName() SK_OVERRIDE {
         return fName.c_str();
     }
 
     void doDraw(SkCanvas* canvas) {
         SkIPoint canvasSize = onGetSize();
         canvas->save();
         canvas->scale(SkIntToScalar(canvasSize.x()), SkIntToScalar(canvasSize.y()));
 
         SkDEBUGCODE(int pics = ) this->sierpinsky(canvas, 0, fPaint);
         SkASSERT(pics == this->countPics());
@@ skipping 92 matching lines @@
 private:
     typedef PictureNesting INHERITED;
 };
 
 class PictureNestingPlayback : public PictureNesting {
 public:
     PictureNestingPlayback(int maxLevel, int maxPictureLevel)
         : INHERITED("playback", maxLevel, maxPictureLevel) {
     }
 protected:
-    virtual void onPreDraw() SK_OVERRIDE {
+    void onPreDraw() SK_OVERRIDE {
         this->INHERITED::onPreDraw();
 
         SkIPoint canvasSize = onGetSize();
         SkPictureRecorder recorder;
         SkCanvas* c = recorder.beginRecording(SkIntToScalar(canvasSize.x()),
                                               SkIntToScalar(canvasSize.y()));
 
         this->doDraw(c);
         fPicture.reset(recorder.endRecording());
     }
@@ skipping 22 matching lines @@
 
 DEF_BENCH( return new PictureNestingPlayback(8, 0); )
 DEF_BENCH( return new PictureNestingPlayback(8, 1); )
 DEF_BENCH( return new PictureNestingPlayback(8, 2); )
 DEF_BENCH( return new PictureNestingPlayback(8, 3); )
 DEF_BENCH( return new PictureNestingPlayback(8, 4); )
 DEF_BENCH( return new PictureNestingPlayback(8, 5); )
 DEF_BENCH( return new PictureNestingPlayback(8, 6); )
 DEF_BENCH( return new PictureNestingPlayback(8, 7); )
 DEF_BENCH( return new PictureNestingPlayback(8, 8); )