Add SessionStateObserver with ActiveUserChanged()

ash/system/tray/system_tray_unittest.cc

 // Copyright (c) 2012 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/system/tray/system_tray.h"
 
 #include <vector>
 
 #include "ash/root_window_controller.h"
 #include "ash/shelf/shelf_widget.h"
@@ skipping 124 matching lines @@
 
 typedef AshTestBase SystemTrayTest;
 
 TEST_F(SystemTrayTest, SystemTrayDefaultView) {
   SystemTray* tray = GetSystemTray();
   ASSERT_TRUE(tray->GetWidget());
 
   tray->ShowDefaultView(BUBBLE_CREATE_NEW);
 
   // Ensure that closing the bubble destroys it.
-  ASSERT_TRUE(tray->CloseSystemBubbleForTest());
+  ASSERT_TRUE(tray->CloseSystemBubble());
   RunAllPendingInMessageLoop();
-  ASSERT_FALSE(tray->CloseSystemBubbleForTest());
+  ASSERT_FALSE(tray->CloseSystemBubble());
 }
 
 TEST_F(SystemTrayTest, SystemTrayTestItems) {
   SystemTray* tray = GetSystemTray();
   ASSERT_TRUE(tray->GetWidget());
 
   TestItem* test_item = new TestItem;
   TestItem* detailed_item = new TestItem;
   tray->AddTrayItem(test_item);
   tray->AddTrayItem(detailed_item);
@@ skipping 82 matching lines @@
   tray->ShowDefaultView(BUBBLE_CREATE_NEW);
   RunAllPendingInMessageLoop();
   ASSERT_TRUE(test_item->notification_view() != NULL);
 
   // Show the detailed view, ensure the notificaiton view remains.
   tray->ShowDetailedView(detailed_item, 0, false, BUBBLE_CREATE_NEW);
   RunAllPendingInMessageLoop();
   ASSERT_TRUE(detailed_item->detailed_view() != NULL);
   ASSERT_TRUE(test_item->notification_view() != NULL);
 
-  // Hide the detailed view, ensure the notificaiton view still exists.
-  ASSERT_TRUE(tray->CloseSystemBubbleForTest());
+  // Hide the detailed view, ensure the notification view still exists.
+  ASSERT_TRUE(tray->CloseSystemBubble());
   RunAllPendingInMessageLoop();
   ASSERT_TRUE(detailed_item->detailed_view() == NULL);
   ASSERT_TRUE(test_item->notification_view() != NULL);
 }
 
 TEST_F(SystemTrayTest, BubbleCreationTypesTest) {
   SystemTray* tray = GetSystemTray();
   ASSERT_TRUE(tray->GetWidget());
 
   TestItem* test_item = new TestItem;
@@ skipping 61 matching lines @@
   // Test in the right alignment. Right and bottom edges should match.
   widget->SetShelfAlignment(SHELF_ALIGNMENT_LEFT);
   window_bounds = widget->GetWindowBoundsInScreen();
   tray_bounds = tray->GetBoundsInScreen();
   EXPECT_EQ(window_bounds.bottom(), tray_bounds.bottom());
   EXPECT_EQ(window_bounds.right(), tray_bounds.right());
 }
 
 }  // namespace test
 }  // namespace ash