chromeos: Rename ash::WmShelf to Shelf

ash/wm/workspace/workspace_layout_manager_unittest.cc

Index: ash/wm/workspace/workspace_layout_manager_unittest.cc
diff --git a/ash/wm/workspace/workspace_layout_manager_unittest.cc b/ash/wm/workspace/workspace_layout_manager_unittest.cc
index dad250beb9f252233a69eb8b23f85519388c7942..74f40d0f1184202bf75b8c74891a9040c2f5f082 100644
--- a/ash/wm/workspace/workspace_layout_manager_unittest.cc
+++ b/ash/wm/workspace/workspace_layout_manager_unittest.cc
@@ -15,9 +15,9 @@
 #include "ash/screen_util.h"
 #include "ash/session/session_controller.h"
 #include "ash/shared/app_types.h"
+#include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_layout_manager.h"
-#include "ash/shelf/wm_shelf.h"
 #include "ash/shell.h"
 #include "ash/shell_observer.h"
 #include "ash/shell_port.h"
@@ -936,7 +936,7 @@ TEST_F(WorkspaceLayoutManagerSoloTest, NotResizeWhenScreenIsLocked) {
   window->SetProperty(aura::client::kAlwaysOnTopKey, true);
   window->Show();
 
-  WmShelf* shelf = GetPrimaryShelf();
+  Shelf* shelf = GetPrimaryShelf();
   shelf->SetAutoHideBehavior(SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS);
 
   window->SetBounds(ScreenUtil::GetMaximizedWindowBoundsInParent(window.get()));
@@ -1123,7 +1123,7 @@ TEST_F(WorkspaceLayoutManagerBackdropTest, VerifyBackdropAndItsStacking) {
 // Tests that when hidding the shelf, that the backdrop stays fullscreen.
 TEST_F(WorkspaceLayoutManagerBackdropTest,
        ShelfVisibilityDoesNotChangesBounds) {
-  WmShelf* shelf = GetPrimaryShelf();
+  Shelf* shelf = GetPrimaryShelf();
   ShelfLayoutManager* shelf_layout_manager = shelf->shelf_layout_manager();
   ShowTopWindowBackdrop(true);
   RunAllPendingInMessageLoop();