Implement the spring charger replacement UI.

ash/system/chromeos/power/tray_power.cc

Index: ash/system/chromeos/power/tray_power.cc
diff --git a/ash/system/chromeos/power/tray_power.cc b/ash/system/chromeos/power/tray_power.cc
index 1eb004840caca6dea72901ec19409310fc870192..735123da76eb59fac642c7bda978bbb677c2d85f 100644
--- a/ash/system/chromeos/power/tray_power.cc
+++ b/ash/system/chromeos/power/tray_power.cc
@@ -5,9 +5,11 @@
 #include "ash/system/chromeos/power/tray_power.h"
 
 #include "ash/ash_switches.h"
+#include "ash/shell.h"
 #include "ash/system/chromeos/power/power_status_view.h"
 #include "ash/system/date/date_view.h"
 #include "ash/system/system_notifier.h"
+#include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_notification_view.h"
 #include "ash/system/tray/tray_utils.h"
@@ -162,6 +164,9 @@ void TrayPower::UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) {
 }
 
 void TrayPower::OnPowerStatusChanged() {
+  // Show spring charger replacement dialog if necessary.
+  ShowChargerReplacementDialogIfNecessary();
+
   bool battery_alert = UpdateNotificationState();
   if (power_tray_)
     power_tray_->UpdateStatus(battery_alert);
@@ -299,5 +304,13 @@ bool TrayPower::UpdateNotificationStateForRemainingPercentage() {
   return false;
 }
 
+void TrayPower::ShowChargerReplacementDialogIfNecessary() {

[Daniel Erat, 2013/12/06 17:43:26]

this separate method seems unnecessary; mind just moving this to
OnPowerStatusChanged()?

  if (PowerStatus::Get()->IsOriginalSpringChargerConnected()) {
    ash::Shell::GetInstance()->system_tray_delegate()->
        ShowSpringChargerReplacementDialog();
  }

[jennyz, 2013/12/06 18:15:16]

Done.

+  if (!PowerStatus::Get()->IsOriginalSpringChargerConnected())
+    return;
+
+  ash::Shell::GetInstance()->system_tray_delegate()->
+      ShowSpringChargerReplacementDialog();
+}
+
 }  // namespace internal
 }  // namespace ash