chromeos: Rename ash::WmShelf to Shelf

ash/shell/shell_delegate_impl.cc

 // 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.
 
 #include "ash/shell/shell_delegate_impl.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/default_accessibility_delegate.h"
 #include "ash/default_wallpaper_delegate.h"
 #include "ash/gpu_support_stub.h"
@@ skipping 131 matching lines @@
 }
 
 AccessibilityDelegate* ShellDelegateImpl::CreateAccessibilityDelegate() {
   return new DefaultAccessibilityDelegate;
 }
 
 std::unique_ptr<PaletteDelegate> ShellDelegateImpl::CreatePaletteDelegate() {
   return base::MakeUnique<PaletteDelegateImpl>();
 }
 
-ui::MenuModel* ShellDelegateImpl::CreateContextMenu(WmShelf* wm_shelf,
+ui::MenuModel* ShellDelegateImpl::CreateContextMenu(Shelf* shelf,
                                                     const ShelfItem* item) {
-  return new ContextMenu(wm_shelf);
+  return new ContextMenu(shelf);
 }
 
 GPUSupport* ShellDelegateImpl::CreateGPUSupport() {
   // Real GPU support depends on src/content, so just use a stub.
   return new GPUSupportStub;
 }
 
 base::string16 ShellDelegateImpl::GetProductName() const {
   return base::string16();
 }
@@ skipping 11 matching lines @@
   return true;
 }
 
 void ShellDelegateImpl::SetTouchscreenEnabledInPrefs(bool enabled,
                                                      bool use_local_state) {}
 
 void ShellDelegateImpl::UpdateTouchscreenStatusFromPrefs() {}
 
 }  // namespace shell
 }  // namespace ash