base: Add base::TimeTicks::IsHighResNowFastAndReliable

base/time/time_posix.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 <stdint.h>
 #include <sys/time.h>
 #include <time.h>
 #if defined(OS_ANDROID)
@@ skipping 250 matching lines @@
 TimeTicks TimeTicks::Now() {
   return ClockNow(CLOCK_MONOTONIC);
 }
 
 // static
 TimeTicks TimeTicks::HighResNow() {
   return Now();
 }
 
 // static
+bool TimeTicks::IsHighResNowFastAndReliable() {
+  return true;
+}
+
+// static
 TimeTicks TimeTicks::ThreadNow() {
 #if defined(_POSIX_THREAD_CPUTIME) && (_POSIX_THREAD_CPUTIME >= 0)
   return ClockNow(CLOCK_THREAD_CPUTIME_ID);
 #else
   NOTREACHED();
   return TimeTicks();
 #endif
 }
 
 #if defined(OS_CHROMEOS)
@@ skipping 57 matching lines @@
     result.tv_usec = static_cast<suseconds_t>(Time::kMicrosecondsPerSecond) - 1;
     return result;
   }
   int64 us = us_ - kTimeTToMicrosecondsOffset;
   result.tv_sec = us / Time::kMicrosecondsPerSecond;
   result.tv_usec = us % Time::kMicrosecondsPerSecond;
   return result;
 }
 
 }  // namespace base