Work around the crOS battery time reporting issue in ash tray battery UI.

ash/system/power/power_status_view.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 "ash/system/power/power_status_view.h"
 
 #include "ash/system/power/tray_power.h"
 #include "ash/system/tray/tray_constants.h"
 #include "base/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
@@ skipping 69 matching lines @@
 
 void PowerStatusView::UpdateText() {
   view_type_ == VIEW_DEFAULT ?
       UpdateTextForDefaultView() : UpdateTextForNotificationView();
 }
 
 void PowerStatusView::UpdateTextForDefaultView() {
   int hour = 0;
   int min = 0;
   if (!supply_status_.is_calculating_battery_time) {
+    // TODO(jennyz): Due to crosbug.com/31633, averaged_battery_time_to_empty
+    // from PowerSupplyStatus object can contain garbage data for the first
+    // call in a crOS session. Until this bug is fixed, use
+    // supply_status_.battery_seconds_to_empty to render battery time.
+    // Change back to use averaged_battery_time_to_empty to display in UI
+    // once crosbug.com/31633 is fixed.
     base::TimeDelta time = base::TimeDelta::FromSeconds(
-        supply_status_.averaged_battery_time_to_empty);
+        supply_status_.battery_seconds_to_empty);

[sadrul, 2012/06/11 21:43:15]

Interesting. Just the seconds_to_empty is garbage, and seconds_to_full is fine?

     hour = time.InHours();
     min = (time - base::TimeDelta::FromHours(hour)).InMinutes();
   }
 
   if (supply_status_.line_power_on && supply_status_.battery_is_full) {
     time_status_label_->SetText(
         ui::ResourceBundle::GetSharedInstance().GetLocalizedString(
             IDS_ASH_STATUS_TRAY_BATTERY_FULL));
   } else {
     string16 battery_percentage = l10n_util::GetStringFUTF16(
@@ skipping 76 matching lines @@
   PreferredSizeChanged();
 }
 
 gfx::Size PowerStatusView::GetPreferredSize() {
   gfx::Size size = views::View::GetPreferredSize();
   return gfx::Size(size.width(), kTrayPopupItemHeight);
 }
 
 }  // namespace internal
 }  // namespace ash