[Windows] One TimeTicks clock: efficient/reliable high-res, with low-res fallback.

base/time/time_mac.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/time/time.h"
 
 #include <CoreFoundation/CFDate.h>
 #include <CoreFoundation/CFTimeZone.h>
 #include <mach/mach.h>
 #include <mach/mach_time.h>
@@ skipping 201 matching lines @@
 }
 
 // TimeTicks ------------------------------------------------------------------
 
 // static
 TimeTicks TimeTicks::Now() {
   return TimeTicks(ComputeCurrentTicks());
 }
 
 // static
-TimeTicks TimeTicks::HighResNow() {
-  return Now();
-}
-
-// static
-bool TimeTicks::IsHighResNowFastAndReliable() {
+bool TimeTicks::IsHighResolution() {
   return true;
 }
 
 // static
 TimeTicks TimeTicks::ThreadNow() {
   return TimeTicks(ComputeThreadTicks());
 }
 
 // static
 TimeTicks TimeTicks::NowFromSystemTraceTime() {
   return HighResNow();
 }
 
 }  // namespace base