Cancel partial screenshot UI when lock happens.

ash/shell_observer.h

Index: ash/shell_observer.h
diff --git a/ash/shell_observer.h b/ash/shell_observer.h
index d9852bcdf9285d43051936b3a603a158559a5571..5e949f41d10e097c349f3778e14e1896fa3f2114 100644
--- a/ash/shell_observer.h
+++ b/ash/shell_observer.h
@@ -15,6 +15,16 @@ class ASH_EXPORT ShellObserver {
   // Invoked after the screen's work area insets changes.
   virtual void OnMonitorWorkAreaInsetsChanged() {}
 
+  // Invoked when the user logs in.
+  virtual void OnLoginStateChange(bool logged_in, bool is_guest) {}

[sky, 2012/04/16 14:47:44]

This should be past tense: OnLoginStateChanged

[Jun Mukai, 2012/04/17 03:34:39]

Done.

+
+  // Invoked when the application is exiting.
+  virtual void OnExit() {}

[sky, 2012/04/16 14:47:44]

Can this match the notification name: OnAppTerminating.

[Jun Mukai, 2012/04/17 03:34:39]

Done.

+
+  // Invoked when the screen is locked (after the lock window is visible) or
+  // unlocked.
+  virtual void OnLockStateChange(bool locked) {}

[sky, 2012/04/16 14:47:44]

Paste tense too: OnLockStateChanged.

[Jun Mukai, 2012/04/17 03:34:39]

Done.

+
  protected:
   virtual ~ShellObserver() {}
 };