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

bench/ImageFilterDAGBench.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 "SkBlurImageFilter.h"
 #include "SkCanvas.h"
 #include "SkMergeImageFilter.h"
 
 enum { kNumInputs = 5 };
 
 // Exercise a blur filter connected to 5 inputs of the same merge filter.
 // This bench shows an improvement in performance once cacheing of re-used
 // nodes is implemented, since the DAG is no longer flattened to a tree.
 
 class ImageFilterDAGBench : public Benchmark {
 public:
     ImageFilterDAGBench() {}
 
 protected:
-    virtual const char* onGetName() SK_OVERRIDE {
+    const char* onGetName() SK_OVERRIDE {
         return "image_filter_dag";
     }
 
-    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         for (int j = 0; j < loops; j++) {
             SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(20.0f, 20.0f));
             SkImageFilter* inputs[kNumInputs];
             for (int i = 0; i < kNumInputs; ++i) {
                 inputs[i] = blur.get();
             }
             SkAutoTUnref<SkImageFilter> merge(SkMergeImageFilter::Create(inputs, kNumInputs));
             SkPaint paint;
             paint.setImageFilter(merge);
             SkRect rect = SkRect::Make(SkIRect::MakeWH(400, 400));
             canvas->drawRect(rect, paint);
         }
     }
 
 private:
     typedef Benchmark INHERITED;
 };
 
 DEF_BENCH(return new ImageFilterDAGBench;)