Cancel partial screenshot UI when lock happens.

BUG=122901
TEST=manually, aura_shell_unittests passed

Review URL: https://chromiumcodereview.appspot.com/10008074

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@133164 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 11 insertions, 0 deletions

diff --git a/ash/shell_observer.h b/ash/shell_observer.h
index d9852bc..9c16668 100644
--- a/ash/shell_observer.h
+++ b/ash/shell_observer.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "ash/ash_export.h"
+#include "ash/system/user/login_status.h"
 
 namespace ash {
 
@@ -15,6 +16,16 @@ class ASH_EXPORT ShellObserver {
   // Invoked after the screen's work area insets changes.
   virtual void OnMonitorWorkAreaInsetsChanged() {}
 
+  // Invoked when the user logs in.
+  virtual void OnLoginStateChanged(user::LoginStatus status) {}
+
+  // Invoked when the application is exiting.
+  virtual void OnAppTerminating() {}
+
+  // Invoked when the screen is locked (after the lock window is visible) or
+  // unlocked.
+  virtual void OnLockStateChanged(bool locked) {}
+
  protected:
   virtual ~ShellObserver() {}
 };