chromeos: Rename ash::WmShelf to Shelf

ash/test/ash_test_base.h

 // 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.
 
 #ifndef ASH_TEST_ASH_TEST_BASE_H_
 #define ASH_TEST_ASH_TEST_BASE_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 31 matching lines @@
 class EventGenerator;
 }
 }
 
 namespace views {
 class Widget;
 class WidgetDelegate;
 }
 
 namespace ash {
+class Shelf;
 class SystemTray;
-class WmShelf;
 
 namespace test {
 
 class AshTestEnvironment;
 class AshTestHelper;
 class TestScreenshotDelegate;
 class TestSessionControllerClient;
 class TestSystemTrayDelegate;
 
 class AshTestBase : public testing::Test {
  public:
   AshTestBase();
   ~AshTestBase() override;
 
   // testing::Test:
   void SetUp() override;
   void TearDown() override;
 
-  // Returns the WmShelf for the primary display.
-  static WmShelf* GetPrimaryShelf();
+  // Returns the Shelf for the primary display.
+  static Shelf* GetPrimaryShelf();
 
   // Returns the system tray on the primary display.
   static SystemTray* GetPrimarySystemTray();
 
   // Update the display configuration as given in |display_specs|.
   // See ash::test::DisplayManagerTestApi::UpdateDisplay for more details.
   void UpdateDisplay(const std::string& display_specs);
 
   // Returns a root Window. Usually this is the active root Window, but that
   // method can return NULL sometimes, and in those cases, we fall back on the
@@ skipping 132 matching lines @@
   ~NoSessionAshTestBase() override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(NoSessionAshTestBase);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_ASH_TEST_BASE_H_