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"
+
+#if !defined(GOOGLE3)
+#include "qcms.h"
+#endif
+
+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:
+    void decodeAndXform();
+    void xformOnly();
+#if !defined(GOOGLE3)
+    void decodeAndXformQCMS();
+    void xformOnlyQCMS();
+#endif
+
+    SkString                                             fName;
+    sk_sp<SkData>                                        fEncoded;
+    SkImageInfo                                          fInfo;
+    SkAutoMalloc                                         fDst;
+    SkAutoMalloc                                         fSrc;
+    sk_sp<SkColorSpace>                                  fDstSpace;
+#if !defined(GOOGLE3)
+    SkAutoTCallVProc<qcms_profile, qcms_profile_release> fDstSpaceQCMS;
+#endif
+    sk_sp<SkData>                                        fSrcData;
+
+    typedef Benchmark INHERITED;
+};
+#endif // ColorCodecBench_DEFINED