ash: Improve low-battery notification thresholds.

ash/system/chromeos/power/power_status.cc

Index: ash/system/chromeos/power/power_status.cc
diff --git a/ash/system/chromeos/power/power_status.cc b/ash/system/chromeos/power/power_status.cc
index 0283a0c3fece1e9faca6ad44302b86019b1ba79f..6b05401891118bd8cf960948af14c78a5d5d37fc 100644
--- a/ash/system/chromeos/power/power_status.cc
+++ b/ash/system/chromeos/power/power_status.cc
@@ -112,7 +112,9 @@ void PowerStatus::SplitTimeIntoHoursAndMinutes(const base::TimeDelta& time,
   DCHECK(hours);
   DCHECK(minutes);
   *hours = time.InHours();
-  *minutes = (time - base::TimeDelta::FromHours(*hours)).InMinutes();
+  const double seconds =

[James Cook, 2013/10/22 00:32:40]

nit: Do you want to comment either here or in the header that the seconds are
rounded and not truncated?

[Daniel Erat, 2013/10/22 03:22:05]

Sure, updated the comment in the header.

+      (time - base::TimeDelta::FromHours(*hours)).InSecondsF();
+  *minutes = static_cast<int>(seconds / 60.0 + 0.5);
 }
 
 void PowerStatus::AddObserver(Observer* observer) {