base: SysInfo::Uptime() returns a TimeDelta

components/startup_metric_utils/browser/startup_metric_utils.cc

 // Copyright 2013 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 "components/startup_metric_utils/browser/startup_metric_utils.h"
 
 #include "base/containers/hash_tables.h"
 #include "base/environment.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 330 matching lines @@
 
   const base::Time& process_creation_time = g_process_creation_time.Get();
   if (!is_first_run && !process_creation_time.is_null()) {
     UMA_HISTOGRAM_AND_TRACE_WITH_STARTUP_TEMPERATURE(
         UMA_HISTOGRAM_LONG_TIMES_100, "Startup.BrowserMessageLoopStartTime",
         process_creation_time, time);
   }
 
   // Bail if uptime < 7 minutes, to filter out cases where Chrome may have been
   // autostarted and the machine is under io pressure.
-  const int64 kSevenMinutesInMilliseconds =
-      base::TimeDelta::FromMinutes(7).InMilliseconds();
-  if (base::SysInfo::Uptime() < kSevenMinutesInMilliseconds)
+  if (base::SysInfo::Uptime() < base::TimeDelta::FromMinutes(7))
     return;
 
   // The Startup.BrowserMessageLoopStartTime histogram exhibits instability in
   // the field which limits its usefulness in all scenarios except when we have
   // a very large sample size. Attempt to mitigate this with a new metric:
   // * Measure time from main entry rather than the OS' notion of process start.
   // * Only measure launches that occur 7 minutes after boot to try to avoid
   //   cases where Chrome is auto-started and IO is heavily loaded.
   const base::Time dll_main_time = MainEntryPointTime();
   if (is_first_run) {
@@ skipping 137 matching lines @@
 
 base::Time MainEntryPointTime() {
   return g_main_entry_point_time.Get();
 }
 
 StartupTemperature GetStartupTemperature() {
   return g_startup_temperature;
 }
 
 }  // namespace startup_metric_utils