Move BenchTimer to tools as Timer

bench/BenchTimer.h

-
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#ifndef SkBenchTimer_DEFINED
-#define SkBenchTimer_DEFINED
-
-#include <SkTypes.h>
-
-
-class BenchSysTimer;
-class BenchGpuTimer;
-
-class SkGLContextHelper;
-
-/**
- * SysTimers and GpuTimers are implemented orthogonally.
- * This class combines 2 SysTimers and a GpuTimer into one single,
- * platform specific Timer with a simple interface. The truncated
- * timer doesn't include the time required for the GPU to finish
- * its rendering. It should always be <= the un-truncated system
- * times and (for GPU configurations) can be used to roughly (very
- * roughly) gauge the GPU load/backlog.
- */
-class BenchTimer {
-public:
-    BenchTimer(SkGLContextHelper* gl = NULL);
-    ~BenchTimer();
-    void start(double durationScale = 1);
-    void end();
-    void truncatedEnd();
-    double fCpu;
-    double fWall;
-    double fTruncatedCpu;
-    double fTruncatedWall;
-    double fGpu;
-
-private:
-    BenchSysTimer* fSysTimer;
-    BenchSysTimer* fTruncatedSysTimer;
-#if SK_SUPPORT_GPU
-    BenchGpuTimer* fGpuTimer;
-#endif
-    double fDurationScale;  // for this start/end session
-};
-
-// Same as BenchTimer above, supporting only fWall but with much lower overhead.
-// (Typically, ~30ns instead of BenchTimer's ~1us.)
-class WallTimer {
-public:
-    WallTimer();
-    ~WallTimer();
-
-    void start(double durationScale = 1);
-    void end();
-
-    double fWall;
-
-private:
-    BenchSysTimer* fSysTimer;
-    double fDurationScale;
-};
-
-#endif