Add color correction benchmark - with comparison to qcms

bench/ColorCodecBench.h

+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef ColorCodecBench_DEFINED
+#define ColorCodecBench_DEFINED
+
+#include "Benchmark.h"
+#include "SkData.h"
+#include "SkImageInfo.h"
+
+class ColorCodecBench : public Benchmark {
+public:
+    ColorCodecBench(const char* name, sk_sp<SkData> encoded);
+
+protected:
+    const char* onGetName() override;
+    bool isSuitableFor(Backend backend) override;
+    void onDraw(int n, SkCanvas* canvas) override;
+    void onDelayedSetup() override;
+
+private:
+    typedef void (*Proc)(SkData* encoded, void* dst, void* srcRow, const SkImageInfo& info,
+                         void* dstProfile, SkData* srcData);
+
+    SkString      fName;
+    sk_sp<SkData> fEncoded;
+    SkImageInfo   fInfo;
+    SkAutoMalloc  fDst;
+    SkAutoMalloc  fSrcRow;
+    sk_sp<SkData> fDstProfile;
+    sk_sp<SkData> fSrcProfile;
+    Proc          fProc;
+
+    typedef Benchmark INHERITED;
+};
+#endif // ColorCodecBench_DEFINED