Re-write many calls to WrapUnique() with MakeUnique()

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/app_list/app_list_presenter_delegate_factory.h"
 #include "ash/common/accessibility_delegate.h"
 #include "ash/common/default_accessibility_delegate.h"
 #include "ash/common/gpu_support_stub.h"
@@ skipping 236 matching lines @@
 
 ash::NewWindowDelegate* ShellDelegateImpl::CreateNewWindowDelegate() {
   return new NewWindowDelegateImpl;
 }
 
 ash::MediaDelegate* ShellDelegateImpl::CreateMediaDelegate() {
   return new MediaDelegateImpl;
 }
 
 std::unique_ptr<PaletteDelegate> ShellDelegateImpl::CreatePaletteDelegate() {
-  return base::WrapUnique(new PaletteDelegateImpl());
+  return base::MakeUnique<PaletteDelegateImpl>();
 }
 
 std::unique_ptr<ash::PointerWatcherDelegate>
 ShellDelegateImpl::CreatePointerWatcherDelegate() {
   return base::WrapUnique(new PointerWatcherDelegateAura);
 }
 
 ui::MenuModel* ShellDelegateImpl::CreateContextMenu(WmShelf* wm_shelf,
                                                     const ShelfItem* item) {
   return new ContextMenu(wm_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();
 }
 
 gfx::Image ShellDelegateImpl::GetDeprecatedAcceleratorImage() const {
   return gfx::Image();
 }
 
 }  // namespace shell
 }  // namespace ash