Revise the shelf alignment locking mechanism.

ash/shelf/shelf_layout_manager_unittest.cc

Index: ash/shelf/shelf_layout_manager_unittest.cc
diff --git a/ash/shelf/shelf_layout_manager_unittest.cc b/ash/shelf/shelf_layout_manager_unittest.cc
index 1f97dcb447039325f509db352efbd8ffdff3fb30..1a0f5da63a0481b93a2c0ee40e4068708c3f9dc1 100644
--- a/ash/shelf/shelf_layout_manager_unittest.cc
+++ b/ash/shelf/shelf_layout_manager_unittest.cc
@@ -381,10 +381,12 @@ class ShelfLayoutManagerTest : public ash::test::AshTestBase {
   // Open the add user screen if |show| is true, otherwise end it.
   void ShowAddUserScreen(bool show) {
     SetUserAddingScreenRunning(show);
-    ShelfLayoutManager* manager = GetShelfWidget()->shelf_layout_manager();
-    manager->SessionStateChanged(
-        show ? SessionStateDelegate::SESSION_STATE_LOGIN_SECONDARY :
-               SessionStateDelegate::SESSION_STATE_ACTIVE);
+
+    const SessionStateDelegate::SessionState state =
+        show ? SessionStateDelegate::SESSION_STATE_LOGIN_SECONDARY
+             : SessionStateDelegate::SESSION_STATE_ACTIVE;
+    GetShelfWidget()->shelf_layout_manager()->SessionStateChanged(state);
+    GetShelfWidget()->shelf()->SessionStateChanged(state);
   }
 
  private:
@@ -764,7 +766,7 @@ TEST_F(ShelfLayoutManagerTest, SideAlignmentInteractionWithLockScreen) {
   manager->SetAlignment(SHELF_ALIGNMENT_LEFT);
   EXPECT_EQ(SHELF_ALIGNMENT_LEFT, manager->GetAlignment());
   LockScreen();
-  EXPECT_EQ(SHELF_ALIGNMENT_BOTTOM, manager->GetAlignment());
+  EXPECT_EQ(SHELF_ALIGNMENT_LOCKED, manager->GetAlignment());
   UnlockScreen();
   EXPECT_EQ(SHELF_ALIGNMENT_LEFT, manager->GetAlignment());
 }
@@ -775,7 +777,7 @@ TEST_F(ShelfLayoutManagerTest, SideAlignmentInteractionWithAddUserScreen) {
   manager->SetAlignment(SHELF_ALIGNMENT_LEFT);
   EXPECT_EQ(SHELF_ALIGNMENT_LEFT, manager->GetAlignment());
   ShowAddUserScreen(true);
-  EXPECT_EQ(SHELF_ALIGNMENT_BOTTOM, manager->GetAlignment());
+  EXPECT_EQ(SHELF_ALIGNMENT_LOCKED, manager->GetAlignment());
   ShowAddUserScreen(false);
   EXPECT_EQ(SHELF_ALIGNMENT_LEFT, manager->GetAlignment());
 }