Notify about major session changes events.

ash/session_state_delegate_stub.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/session_state_delegate_stub.h"
 
 #include "ash/shell.h"
 #include "ash/shell/example_factory.h"
 #include "ash/shell_delegate.h"
 #include "base/strings/string16.h"
@@ skipping 51 matching lines @@
 
 void SessionStateDelegateStub::UnlockScreen() {
   screen_locked_ = false;
   Shell::GetInstance()->UpdateShelfVisibility();
 }
 
 bool SessionStateDelegateStub::IsUserSessionBlocked() const  {
   return !IsActiveUserSessionStarted() || IsScreenLocked();
 }
 
+SessionStateDelegate::SessionState SessionStateDelegateStub::GetSessionState()
+    const {
+  if (IsScreenLocked())
+    return STATE_LOCK;
+
+  // Assuming that if session is not active we're at login.

[Daniel Erat, 2014/04/10 16:30:32]

nit: s/Assuming/Assume/

[Nikita (slow), 2014/04/10 17:22:51]

Done.

+  return IsActiveUserSessionStarted() ? STATE_SESSION : STATE_LOGIN_PRIMARY;
+}
+
 const base::string16 SessionStateDelegateStub::GetUserDisplayName(
     MultiProfileIndex index) const {
   return base::UTF8ToUTF16("stub-user");
 }
 
 const std::string SessionStateDelegateStub::GetUserEmail(
     MultiProfileIndex index) const {
   return "stub-user@domain.com";
 }
 
@@ skipping 19 matching lines @@
 
 void SessionStateDelegateStub::AddSessionStateObserver(
     ash::SessionStateObserver* observer) {
 }
 
 void SessionStateDelegateStub::RemoveSessionStateObserver(
     ash::SessionStateObserver* observer) {
 }
 
 }  // namespace ash