chromeos: Rename ash::WmShelf to Shelf

ash/mus/shell_delegate_mus.cc

 // Copyright 2016 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/mus/shell_delegate_mus.h"
 
 #include <utility>
 
 #include "ash/gpu_support_stub.h"
 #include "ash/mus/accessibility_delegate_mus.h"
@@ skipping 116 matching lines @@
 AccessibilityDelegate* ShellDelegateMus::CreateAccessibilityDelegate() {
   return new AccessibilityDelegateMus(connector_);
 }
 
 std::unique_ptr<PaletteDelegate> ShellDelegateMus::CreatePaletteDelegate() {
   // TODO: http://crbug.com/647417.
   NOTIMPLEMENTED();
   return nullptr;
 }
 
-ui::MenuModel* ShellDelegateMus::CreateContextMenu(WmShelf* wm_shelf,
+ui::MenuModel* ShellDelegateMus::CreateContextMenu(Shelf* shelf,
                                                    const ShelfItem* item) {
-  return new ContextMenuMus(wm_shelf);
+  return new ContextMenuMus(shelf);
 }
 
 GPUSupport* ShellDelegateMus::CreateGPUSupport() {
   // TODO: http://crbug.com/647421.
   NOTIMPLEMENTED() << " Using a stub GPUSupport implementation";
   return new GPUSupportStub();
 }
 
 base::string16 ShellDelegateMus::GetProductName() const {
   NOTIMPLEMENTED();
@@ skipping 21 matching lines @@
 void ShellDelegateMus::SetTouchscreenEnabledInPrefs(bool enabled,
                                                     bool use_local_state) {
   NOTIMPLEMENTED();
 }
 
 void ShellDelegateMus::UpdateTouchscreenStatusFromPrefs() {
   NOTIMPLEMENTED();
 }
 
 }  // namespace ash