mash: Migrate ShellDelegate ownership and access to WmShell.

ash/system/user/user_view.cc

 // Copyright 2014 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/system/user/user_view.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "ash/common/session/session_state_delegate.h"
+#include "ash/common/shell_delegate.h"
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/system/tray/system_tray_delegate.h"
 #include "ash/common/system/tray/tray_constants.h"
 #include "ash/common/system/tray/tray_popup_label_button.h"
 #include "ash/common/system/tray/tray_popup_label_button_border.h"
 #include "ash/common/system/user/button_from_view.h"
 #include "ash/common/system/user/login_status.h"
 #include "ash/common/system/user/rounded_image_view.h"
 #include "ash/common/wm_lookup.h"
 #include "ash/common/wm_root_window_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
 #include "ash/multi_profile_uma.h"
 #include "ash/popup_message.h"
-#include "ash/shell.h"
-#include "ash/shell_delegate.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/user/user_card_view.h"
 #include "components/signin/core/account_id/account_id.h"
 #include "components/user_manager/user_info.h"
 #include "grit/ash_resources.h"
 #include "grit/ash_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/views/layout/fill_layout.h"
 #include "ui/views/painter.h"
@@ skipping 41 matching lines @@
   if (delegate->IsUserSessionBlocked())
     return;
 
   DCHECK(user_index > 0);
   MultiProfileUMA::RecordSwitchActiveUser(
       MultiProfileUMA::SWITCH_ACTIVE_USER_BY_TRAY);
   delegate->SwitchActiveUser(delegate->GetUserInfo(user_index)->GetAccountId());
 }
 
 bool IsMultiProfileSupportedAndUserActive() {
-  return Shell::GetInstance()->delegate()->IsMultiProfilesEnabled() &&
+  return WmShell::Get()->delegate()->IsMultiProfilesEnabled() &&
          !WmShell::Get()->GetSessionStateDelegate()->IsUserSessionBlocked();
 }
 
 class UserViewMouseWatcherHost : public views::MouseWatcherHost {
  public:
   explicit UserViewMouseWatcherHost(const gfx::Rect& screen_area)
       : screen_area_(screen_area) {}
   ~UserViewMouseWatcherHost() override {}
 
   // Implementation of MouseWatcherHost.
@@ skipping 414 matching lines @@
   focus_manager_ = NULL;
   if (user_card_view_->GetFocusManager())
     user_card_view_->GetFocusManager()->ClearFocus();
   popup_message_.reset();
   mouse_watcher_.reset();
   add_menu_option_.reset();
 }
 
 }  // namespace tray
 }  // namespace ash