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

bench/WritePixelsBench.cpp

 /*
  * Copyright 2013 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 "SkString.h"
@@ skipping 23 matching lines @@
             case kUnpremul_SkAlphaType:
                 fName.append("_UPM");
                 break;
             default:
                 SkASSERT(0);
                 break;
         }
     }
 
 protected:
-    virtual const char* onGetName() SK_OVERRIDE {
+    const char* onGetName() SK_OVERRIDE {
         return fName.c_str();
     }
 
-    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkISize size = canvas->getDeviceSize();
 
         canvas->clear(0xFFFF0000);
 
         SkBitmap bmp;
         bmp.allocN32Pixels(size.width(), size.height());
         canvas->readPixels(&bmp, 0, 0);
 
         SkImageInfo info = SkImageInfo::Make(bmp.width(), bmp.height(), fColorType, fAlphaType);
 
         for (int loop = 0; loop < loops; ++loop) {
             canvas->writePixels(info, bmp.getPixels(), bmp.rowBytes(), 0, 0);
         }
     }
 
 private:
     SkColorType fColorType;
     SkAlphaType fAlphaType;
     SkString    fName;
 
     typedef Benchmark INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_BENCH( return SkNEW_ARGS(WritePixelsBench, (kRGBA_8888_SkColorType, kPremul_SkAlphaType)); )
 DEF_BENCH( return SkNEW_ARGS(WritePixelsBench, (kRGBA_8888_SkColorType, kUnpremul_SkAlphaType)); )