Rename SessionStateController -> LockStateController

ash/wm/session_lock_state_observer.h

Index: ash/wm/session_lock_state_observer.h
diff --git a/ash/wm/session_state_observer.h b/ash/wm/session_lock_state_observer.h
similarity index 81%
rename from ash/wm/session_state_observer.h
rename to ash/wm/session_lock_state_observer.h
index 8df4018fb9e544d82b98630ca8c1abe691e4f026..8ecd4319c464aceb1252371f5f5105ea0c93f0dd 100644
--- a/ash/wm/session_state_observer.h
+++ b/ash/wm/session_lock_state_observer.h
@@ -11,7 +11,7 @@ namespace ash {
 
 // Interface for classes that want to be notified by SessionStateController when
 // session-related events occur.
-class ASH_EXPORT SessionStateObserver {
+class ASH_EXPORT SessionLockStateObserver {
  public:
   enum EventType {
     EVENT_PRELOCK_ANIMATION_STARTED,
@@ -19,8 +19,8 @@ class ASH_EXPORT SessionStateObserver {
     EVENT_LOCK_ANIMATION_FINISHED,
   };
 
-  virtual void OnSessionStateEvent(EventType event) = 0;
-  virtual ~SessionStateObserver() {};
+  virtual void OnSessionLockStateEvent(EventType event) = 0;
+  virtual ~SessionLockStateObserver() {}
 };
 
 }  // namespace ash