Move MaximizeModeWindowManager to the controller

ash/wm/maximize_mode/maximize_mode_controller_unittest.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/wm/maximize_mode/maximize_mode_controller.h"
 
 #include "ash/accelerometer/accelerometer_controller.h"
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_delegate.h"
@@ skipping 104 matching lines @@
 
   MaximizeModeController* maximize_mode_controller() {
     return Shell::GetInstance()->maximize_mode_controller();
   }
 
   void TriggerAccelerometerUpdate(const gfx::Vector3dF& base,
                                   const gfx::Vector3dF& lid) {
     maximize_mode_controller()->OnAccelerometerUpdated(base, lid);
   }
 
-  bool IsMaximizeModeStarted() const {
-    return Shell::GetInstance()->IsMaximizeModeWindowManagerEnabled();
+  bool IsMaximizeModeStarted() {
+    return maximize_mode_controller()->IsMaximizeModeWindowManagerEnabled();
   }
 
   // Overrides the internal input device list for the current event targeters
   // with one which always returns true.
   void InstallTestInternalDeviceList() {
     maximize_mode_controller()->event_blocker_->internal_devices_.reset(
         new TestInternalInputDeviceList);
   }
 
   gfx::Display::Rotation GetInternalDisplayRotation() const {
@@ skipping 476 matching lines @@
   EXPECT_EQ(gfx::Display::ROTATE_180, GetInternalDisplayRotation());
 
   // Exit maximize mode
   TriggerAccelerometerUpdate(gfx::Vector3dF(0.0f, 0.0f, 1.0f),
                              gfx::Vector3dF(-1.0f, 0.0f, 0.0f));
   EXPECT_FALSE(IsMaximizeModeStarted());
   EXPECT_EQ(gfx::Display::ROTATE_90, GetInternalDisplayRotation());
 }
 
 }  // namespace ash