Moves Shell::maximize_mode_controller() to WmShell

ash/wm/lock_state_controller_unittest.cc

 // Copyright 2013 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/wm/lock_state_controller.h"
 
 #include <memory>
 #include <utility>
 
 #include "ash/common/session/session_state_delegate.h"
@@ skipping 283 matching lines @@
     base::Closure closure = base::Bind(&CheckCalledCallback, call_flag);
     lock_state_controller_->OnLockScreenHide(closure);
   }
 
   void SystemUnlocks() {
     lock_state_controller_->OnLockStateChanged(false);
     WmShell::Get()->GetSessionStateDelegate()->UnlockScreen();
   }
 
   void EnableMaximizeMode(bool enable) {
-    Shell::GetInstance()
-        ->maximize_mode_controller()
-        ->EnableMaximizeModeWindowManager(enable);
+    WmShell::Get()->maximize_mode_controller()->EnableMaximizeModeWindowManager(
+        enable);
   }
 
   void Initialize(bool legacy_button, LoginStatus status) {
     power_button_controller_->set_has_legacy_power_button_for_test(
         legacy_button);
     lock_state_controller_->OnLoginStateChanged(status);
     SetUserLoggedIn(status != LoginStatus::NOT_LOGGED_IN);
     if (status == LoginStatus::GUEST)
       SetCanLockScreen(false);
     lock_state_controller_->OnLockStateChanged(false);
@@ skipping 763 matching lines @@
   ReleasePowerButton();
 
   ExpectPreLockAnimationStarted();
 
   test_animator_->CompleteAllAnimations(true);
   EXPECT_EQ(1, lock_state_controller_delegate_->num_lock_requests());
 }
 
 }  // namespace test
 }  // namespace ash