Move AccessibilityDelegate ownership to ash::WmShell

ash/common/system/tray/system_tray_unittest.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/tray/system_tray.h"
 
 #include <vector>
 
 #include "ash/common/accessibility_delegate.h"
 #include "ash/common/shelf/wm_shelf.h"
@@ skipping 411 matching lines @@
 }
 
 #if defined(OS_CHROMEOS)
 // Accessibility/Settings tray items are available only on cros.
 #define MAYBE_WithSystemModal WithSystemModal
 #else
 #define MAYBE_WithSystemModal DISABLED_WithSystemModal
 #endif
 TEST_F(SystemTrayTest, MAYBE_WithSystemModal) {
   // Check if the accessibility item is created even with system modal dialog.
-  WmShell::Get()->GetAccessibilityDelegate()->SetVirtualKeyboardEnabled(true);
+  WmShell::Get()->accessibility_delegate()->SetVirtualKeyboardEnabled(true);
   std::unique_ptr<views::Widget> widget(CreateTestWidget(
       new ModalWidgetDelegate, kShellWindowId_SystemModalContainer,
       gfx::Rect(0, 0, 100, 100)));
 
   SystemTray* tray = GetPrimarySystemTray();
   tray->ShowDefaultView(BUBBLE_CREATE_NEW);
 
   ASSERT_TRUE(tray->HasSystemBubble());
   const views::View* accessibility =
       tray->GetSystemBubble()->bubble_view()->GetViewByID(
@@ skipping 103 matching lines @@
   // Hide the default view, ensure the tray bubble height is back to zero.
   ASSERT_TRUE(tray->CloseSystemBubble());
   RunAllPendingInMessageLoop();
 
   EXPECT_EQ(0, notification_tray->tray_bubble_height_for_test());
 }
 #endif  // OS_CHROMEOS
 
 }  // namespace test
 }  // namespace ash