Notify about major session changes events.

chrome/browser/chromeos/login/screen_locker_browsertest.cc

Index: chrome/browser/chromeos/login/screen_locker_browsertest.cc
diff --git a/chrome/browser/chromeos/login/screen_locker_browsertest.cc b/chrome/browser/chromeos/login/screen_locker_browsertest.cc
index 0288f91cb2edb16a73474397ded18fc5fd65ec7c..72a114bab6727cf3cc2f60282ab7bea2b005fd64 100644
--- a/chrome/browser/chromeos/login/screen_locker_browsertest.cc
+++ b/chrome/browser/chromeos/login/screen_locker_browsertest.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/browser/chromeos/login/screen_locker.h"
 
+#include "ash/session_state_delegate.h"
+#include "ash/shell.h"
 #include "ash/wm/window_state.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
@@ -140,7 +142,11 @@ class ScreenLockerTest : public InProcessBrowserTest {
 };
 
 IN_PROC_BROWSER_TEST_F(ScreenLockerTest, TestBasic) {
+  EXPECT_EQ(ash::SessionStateDelegate::STATE_SESSION,
+            ash::Shell::GetInstance()->session_state_delegate()->
+                GetSessionState());
   ScreenLocker::Show();
+
   scoped_ptr<test::ScreenLockerTester> tester(ScreenLocker::GetTester());
   tester->EmulateWindowManagerReady();
   content::WindowedNotificationObserver lock_state_observer(
@@ -149,6 +155,10 @@ IN_PROC_BROWSER_TEST_F(ScreenLockerTest, TestBasic) {
   if (!tester->IsLocked())
     lock_state_observer.Wait();
 
+  EXPECT_EQ(ash::SessionStateDelegate::STATE_LOCK,
+            ash::Shell::GetInstance()->session_state_delegate()->
+                GetSessionState());
+
   // Test to make sure that the widget is actually appearing and is of
   // reasonable size, preventing a regression of
   // http://code.google.com/p/chromium-os/issues/detail?id=5987
@@ -163,6 +173,7 @@ IN_PROC_BROWSER_TEST_F(ScreenLockerTest, TestBasic) {
   EXPECT_TRUE(tester->IsLocked());
   tester->EnterPassword("pass");
   content::RunAllPendingInMessageLoop();
+
   // Successful authentication clears the lock screen and tells the
   // SessionManager to announce this over DBus.
   EXPECT_FALSE(tester->IsLocked());
@@ -171,6 +182,9 @@ IN_PROC_BROWSER_TEST_F(ScreenLockerTest, TestBasic) {
       fake_session_manager_client_->notify_lock_screen_shown_call_count());
 
   EXPECT_TRUE(VerifyLockScreenDismissed());
+  EXPECT_EQ(ash::SessionStateDelegate::STATE_SESSION,
+            ash::Shell::GetInstance()->session_state_delegate()->
+                GetSessionState());
 }
 
 // Test how locking the screen affects an active fullscreen window.