Notify about major session changes events.

ash/test/test_session_state_delegate.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/test/test_session_state_delegate.h"
 
 #include <algorithm>
 #include <string>
 
 #include "ash/shell.h"
@@ skipping 73 matching lines @@
 
 void TestSessionStateDelegate::UnlockScreen() {
   screen_locked_ = false;
 }
 
 bool TestSessionStateDelegate::IsUserSessionBlocked() const {
   return !IsActiveUserSessionStarted() || IsScreenLocked() ||
       user_adding_screen_running_;
 }
 
+SessionStateDelegate::SessionState TestSessionStateDelegate::GetSessionState()
+    const {
+  if (user_adding_screen_running_)
+    return STATE_LOGIN_SECONDARY;
+
+  // Assuming that if session is not active we're at login.
+  return IsActiveUserSessionStarted() ? STATE_SESSION : STATE_LOGIN_PRIMARY;
+}
+
 void TestSessionStateDelegate::SetHasActiveUser(bool has_active_user) {
   has_active_user_ = has_active_user;
   if (!has_active_user)
     active_user_session_started_ = false;
   else
     Shell::GetInstance()->ShowShelf();
 }
 
 void TestSessionStateDelegate::SetActiveUserSessionStarted(
     bool active_user_session_started) {
@@ skipping 67 matching lines @@
 void TestSessionStateDelegate::AddSessionStateObserver(
     SessionStateObserver* observer) {
 }
 
 void TestSessionStateDelegate::RemoveSessionStateObserver(
     SessionStateObserver* observer) {
 }
 
 }  // namespace test
 }  // namespace ash