Move BenchTimer to tools as Timer

tools/timer/Timer.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
+#ifndef Timer_DEFINED
+#define Timer_DEFINED
 
-#include <SkTypes.h>
+#include "SkTypes.h"
 
+#if defined(SK_BUILD_FOR_WIN32)
+    #include "SysTimer_windows.h"
+#elif defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
+    #include "SysTimer_mach.h"
+#elif defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_ANDROID)
+    #include "SysTimer_posix.h"
+#endif
 
-class BenchSysTimer;
-class BenchGpuTimer;
+#if SK_SUPPORT_GPU
+    #include "GpuTimer.h"
+#endif
 
 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 {
+class Timer {
 public:
-    BenchTimer(SkGLContextHelper* gl = NULL);
-    ~BenchTimer();
-    void start(double durationScale = 1);
+    explicit Timer(SkGLContextHelper* gl = NULL);
+
+    void start();
+    void truncatedEnd();
     void end();
-    void truncatedEnd();
+
+    // All times in milliseconds.
     double fCpu;
     double fWall;
     double fTruncatedCpu;
     double fTruncatedWall;
     double fGpu;
 
 private:
-    BenchSysTimer* fSysTimer;
-    BenchSysTimer* fTruncatedSysTimer;
+    SysTimer fSysTimer;
+    SysTimer fTruncatedSysTimer;
 #if SK_SUPPORT_GPU
-    BenchGpuTimer* fGpuTimer;
+    GpuTimer 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.)
+// Same as Timer above, supporting only fWall but with much lower overhead.
+// (Typically, ~30ns instead of Timer's ~1us.)
 class WallTimer {
 public:
     WallTimer();
-    ~WallTimer();
 
-    void start(double durationScale = 1);
+    void start();
     void end();
 
-    double fWall;
+    double fWall;  // Milliseconds.
 
 private:
-    BenchSysTimer* fSysTimer;
-    double fDurationScale;
+    SysTimer fSysTimer;
 };
 
 #endif