Index: chromeos/dbus/power_manager_client.h |
diff --git a/chromeos/dbus/power_manager_client.h b/chromeos/dbus/power_manager_client.h |
index be598d5468e5a0b955a954ddcfb98eb246cb3011..b68800271e47dc5da09db949409674e3a8d1adfa 100644 |
--- a/chromeos/dbus/power_manager_client.h |
+++ b/chromeos/dbus/power_manager_client.h |
@@ -100,7 +100,7 @@ class CHROMEOS_EXPORT PowerManagerClient : public DBusClient { |
// Adds and removes the observer. |
virtual void AddObserver(Observer* observer) = 0; |
virtual void RemoveObserver(Observer* observer) = 0; |
- virtual bool HasObserver(Observer* observer) = 0; |
+ virtual bool HasObserver(const Observer* observer) const = 0; |
// Decreases the screen brightness. |allow_off| controls whether or not |
// it's allowed to turn off the back light. |