chromeos: Rename ash::WmShelf to Shelf

chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc

Index: chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc
diff --git a/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc b/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc
index 7470b3d027a01dddba37d84e3145a544e30fbd4c..3d78af36f02a599854fd0dd39f5e6e09b79d3eee 100644
--- a/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc
+++ b/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc
@@ -5,9 +5,9 @@
 #include "chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.h"
 
 #include "ash/root_window_controller.h"
+#include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shelf/shelf_widget.h"
-#include "ash/shelf/wm_shelf.h"
 #include "ash/shell.h"
 #include "ash/shell_port.h"
 #include "ash/wallpaper/wallpaper_delegate.h"
@@ -231,7 +231,7 @@ void UserSwitchAnimatorChromeOS::TransitionUserShelf(
           new_account_id_.GetUserEmail());
     // Hide the black rectangle on top of each shelf again.
     for (aura::Window* window : ash::Shell::GetAllRootWindows()) {
-      ash::ShelfWidget* shelf = ash::WmShelf::ForWindow(window)->shelf_widget();
+      ash::ShelfWidget* shelf = ash::Shelf::ForWindow(window)->shelf_widget();
       shelf->HideShelfBehindBlackBar(false, duration_override);
     }
     // We kicked off the shelf animation above and the override can be
@@ -263,7 +263,7 @@ void UserSwitchAnimatorChromeOS::TransitionUserShelf(
     // CPU usage and therefore effect jank, we should avoid hiding the shelf if
     // the start and end location are the same and cover the shelf instead with
     // a black rectangle on top.
-    ash::WmShelf* shelf = ash::WmShelf::ForWindow(window);
+    ash::Shelf* shelf = ash::Shelf::ForWindow(window);
     if (GetScreenCover(window) != NO_USER_COVERS_SCREEN &&
         (!chrome_launcher_controller ||
          !chrome_launcher_controller->ShelfBoundsChangesProbablyWithUser(