Move power_supply_status.* from src/ash to src/chromeos

ash/system/tray/system_tray_delegate.h

Index: ash/system/tray/system_tray_delegate.h
diff --git a/ash/system/tray/system_tray_delegate.h b/ash/system/tray/system_tray_delegate.h
index 149d533ab9be26579e96650cd808e500a194ba8d..27281ed96bf9f079cfcc1f3f799ee6363bb0ffec 100644
--- a/ash/system/tray/system_tray_delegate.h
+++ b/ash/system/tray/system_tray_delegate.h
@@ -17,6 +17,12 @@
 
 class SkBitmap;
 
+namespace chromeos {
+
+struct PowerSupplyStatus;
+
+}  // namespace chromeos
+
 namespace ash {
 
 struct ASH_EXPORT NetworkIconInfo {
@@ -64,8 +70,6 @@ struct ASH_EXPORT IMEInfo {
 
 typedef std::vector<IMEInfo> IMEInfoList;
 
-struct PowerSupplyStatus;
-
 class SystemTrayDelegate {
  public:
   virtual ~SystemTrayDelegate() {}
@@ -89,7 +93,7 @@ class SystemTrayDelegate {
   virtual base::HourClockType GetHourClockType() const = 0;
 
   // Gets the current power supply status.
-  virtual PowerSupplyStatus GetPowerSupplyStatus() const = 0;
+  virtual chromeos::PowerSupplyStatus GetPowerSupplyStatus() const = 0;
 
   // Shows settings.
   virtual void ShowSettings() = 0;