Subset decoding benchmarks

bench/DecodingSubsetBench.h

-/*
- * Copyright 2015 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 "SkImageDecoder.h"
-#include "SkImageInfo.h"
-#include "SkStream.h"
-#include "SkString.h"
-
-/*
- *
- * This benchmark is designed to test the performance of image subset decoding.
- * It is invoked from the nanobench.cpp file.
- *
- */
-class DecodingSubsetBench : public Benchmark {
-public:
-    DecodingSubsetBench(SkString path, SkColorType colorType,
-            const int divisor);
-
-protected:
-    const char* onGetName() override;
-    bool isSuitableFor(Backend backend) override;
-    void onDraw(const int n, SkCanvas* canvas) override;
-    
-private:
-    SkString fName;
-    SkColorType fColorType;
-    const int fDivisor;
-    SkAutoTDelete<SkMemoryStream> fStream;
-    SkAutoTDelete<SkImageDecoder> fDecoder;
-    typedef Benchmark INHERITED;
-};