Index: chromeos/dbus/system_clock_client.h |
diff --git a/chromeos/dbus/system_clock_client.h b/chromeos/dbus/system_clock_client.h |
index 1757853950f57f68eb23ecd1dacd9b2e68188426..8380ff1de3808304eefd9405a983bca9afab0c70 100644 |
--- a/chromeos/dbus/system_clock_client.h |
+++ b/chromeos/dbus/system_clock_client.h |
@@ -35,7 +35,7 @@ class CHROMEOS_EXPORT SystemClockClient : public DBusClient { |
// Removes the given observer if this object has the observer. |
virtual void RemoveObserver(Observer* observer) = 0; |
// Returns true if this object has the given observer. |
- virtual bool HasObserver(Observer* observer) = 0; |
+ virtual bool HasObserver(const Observer* observer) const = 0; |
// Sets the system clock. |
virtual void SetTime(int64 time_in_seconds) = 0; |