chromeos: Simplify power supply info in PowerLibrary

chrome/browser/chromeos/low_battery_observer.cc

Index: chrome/browser/chromeos/low_battery_observer.cc
diff --git a/chrome/browser/chromeos/low_battery_observer.cc b/chrome/browser/chromeos/low_battery_observer.cc
index fea2d0d60b0533f4613e1151064a50e358b213e2..be6410b31c3e02ad5b8620649a7050edd0f756ac 100644
--- a/chrome/browser/chromeos/low_battery_observer.cc
+++ b/chrome/browser/chromeos/low_battery_observer.cc
@@ -8,6 +8,7 @@
 #include "chrome/common/time_format.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
+#include "third_party/cros/chromeos_power.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace chromeos {
@@ -22,7 +23,7 @@ LowBatteryObserver::~LowBatteryObserver() {
   Hide();
 }
 
-void LowBatteryObserver::PowerChanged(PowerLibrary* power_lib) {
+void LowBatteryObserver::PowerChanged(const PowerStatus& power_status) {
   const int limit_min = 15;   // Notification will show when remaining number
                               // of minutes is <= limit.
   const int limit_max = 30;   // Notification will hid when remaining number
@@ -30,21 +31,19 @@ void LowBatteryObserver::PowerChanged(PowerLibrary* power_lib) {
   const int critical = 5;  // Notification will be forced visible if hidden
                            // by user when time remaining <= critical.
 
-  base::TimeDelta remaining = power_lib->GetBatteryTimeToEmpty();
-  int remaining_minutes = remaining.InMinutes();
+  int remaining = power_status.battery_time_to_empty;
 
   // To simplify the logic - we handle the case of calculating the remaining
   // time as if we were on line power.
   // remaining time of zero means still calculating, this is denoted by
   // base::TimeDelta().
-  bool line_power = power_lib->IsLinePowerOn() ||
-                    remaining == base::TimeDelta();
+  bool line_power = power_status.line_power_on || remaining == 0;
 
   // The urgent flag is used to re-notify the user if the power level
   // goes critical. We only want to do this once even if the time remaining
   // goes back up (so long as it doesn't go above limit_max.
   bool urgent = !line_power &&
-      (notification_.urgent() || remaining_minutes <= critical);
+      (notification_.urgent() || remaining <= critical);
 
   // This is a simple state machine with two states and three edges:
   // States: visible_, !visible_
@@ -59,14 +58,14 @@ void LowBatteryObserver::PowerChanged(PowerLibrary* power_lib) {
   //          we know the remaining time, and that time is less than limit.
 
   if (notification_.visible()) {
-    if (line_power || remaining_minutes > limit_max) {
+    if (line_power || remaining > limit_max) {
       Hide();
-    } else if (remaining_minutes != remaining_) {
-      Show(remaining, urgent);
+    } else if (remaining != remaining_) {
+      Show(base::TimeDelta::FromSeconds(remaining), urgent);
     }
   } else {
-    if (!line_power && remaining_minutes <= limit_min) {
-      Show(remaining, urgent);
+    if (!line_power && remaining <= limit_min) {
+      Show(base::TimeDelta::FromSeconds(remaining), urgent);
     }
   }
 }