Sketch DM refactor.

tools/timer/Timer.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "Timer.h"
 
 Timer::Timer(SkGLContext* gl)
         : fCpu(-1.0)
@@ skipping 33 matching lines @@
 
 WallTimer::WallTimer() : fWall(-1.0) {}
 
 void WallTimer::start() {
     fSysTimer.startWall();
 }
 
 void WallTimer::end() {
     fWall = fSysTimer.endWall();
 }
+
+SkString HumanizeMs(double ms) {
+    if (ms > 1e+3)     return SkStringPrintf("%.3gs",  ms/1e3);
+    if (ms < 1e-3)     return SkStringPrintf("%.3gns", ms*1e6);
+#ifdef SK_BUILD_FOR_WIN
+    if (ms < 1)        return SkStringPrintf("%.3gus", ms*1e3);
+#else
+    if (ms < 1)        return SkStringPrintf("%.3gµs", ms*1e3);
+#endif
+    return SkStringPrintf("%.3gms", ms);
+}