Move AccessibilityDelegate ownership to ash::WmShell

ash/common/system/ime/tray_ime_chromeos.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/common/system/ime/tray_ime_chromeos.h"
 
 #include <vector>
 
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/system/tray/hover_highlight_view.h"
@@ skipping 265 matching lines @@
     } else {
       tray_label_->label()->SetText(current.short_name);
     }
     SetTrayLabelItemBorder(tray_label_, system_tray()->shelf_alignment());
     tray_label_->Layout();
   }
 }
 
 bool TrayIME::ShouldShowKeyboardToggle() {
   return keyboard_suppressed_ &&
-         !WmShell::Get()
-              ->GetAccessibilityDelegate()
-              ->IsVirtualKeyboardEnabled();
+         !WmShell::Get()->accessibility_delegate()->IsVirtualKeyboardEnabled();
 }
 
 base::string16 TrayIME::GetDefaultViewLabel(bool show_ime_label) {
   if (show_ime_label) {
     IMEInfo current;
     WmShell::Get()->system_tray_delegate()->GetCurrentIME(&current);
     return current.name;
   } else {
     // Display virtual keyboard status instead.
     int id = keyboard::IsKeyboardEnabled()
@@ skipping 67 matching lines @@
   else
     Update();
 }
 
 bool TrayIME::ShouldDefaultViewBeVisible() {
   return is_visible_ && (ime_list_.size() > 1 || property_list_.size() > 1 ||
                          ShouldShowKeyboardToggle());
 }
 
 }  // namespace ash