Move MaximizeModeWindowManager to the controller

ash/system/chromeos/rotation/tray_rotation_lock.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/chromeos/rotation/tray_rotation_lock.h"
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/tray_item_more.h"
 #include "ash/wm/maximize_mode/maximize_mode_controller.h"
@@ skipping 26 matching lines @@
 
  private:
   void UpdateImage();
 
   DISALLOW_COPY_AND_ASSIGN(RotationLockDefaultView);
 };
 
 RotationLockDefaultView::RotationLockDefaultView(SystemTrayItem* owner)
     : TrayItemMore(owner, false) {
   UpdateImage();
-  SetVisible(Shell::GetInstance()->IsMaximizeModeWindowManagerEnabled());
+  SetVisible(Shell::GetInstance()->maximize_mode_controller()->
+                 IsMaximizeModeWindowManagerEnabled());
   Shell::GetInstance()->AddShellObserver(this);
 }
 
 RotationLockDefaultView::~RotationLockDefaultView() {
   Shell::GetInstance()->RemoveShellObserver(this);
 }
 
 bool RotationLockDefaultView::PerformAction(const ui::Event& event) {
   MaximizeModeController* maximize_mode_controller = Shell::GetInstance()->
       maximize_mode_controller();
@@ skipping 66 matching lines @@
 void TrayRotationLock::OnMaximizeModeStarted() {
   tray_view()->SetVisible(
       Shell::GetInstance()->maximize_mode_controller()->rotation_locked());
 }
 
 void TrayRotationLock::OnMaximizeModeEnded() {
   tray_view()->SetVisible(false);
 }
 
 bool TrayRotationLock::GetInitialVisibility() {
+  MaximizeModeController* controller = Shell::GetInstance()->
+      maximize_mode_controller();
   return on_primary_display_ &&
-         Shell::GetInstance()->IsMaximizeModeWindowManagerEnabled() &&
-         Shell::GetInstance()->maximize_mode_controller()->rotation_locked();
+         controller->IsMaximizeModeWindowManagerEnabled() &&
+         controller->rotation_locked();
 }
 
 }  // namespace ash