Fix MaximizeModeController startup race

ash/common/wm/maximize_mode/maximize_mode_controller.h

 // 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.
 
 #ifndef ASH_COMMON_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_
 #define ASH_COMMON_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
 #include "ash/common/shell_observer.h"
 #include "ash/common/wm_display_observer.h"
 #include "ash/public/interfaces/touch_view.mojom.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
+#include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "chromeos/accelerometer/accelerometer_reader.h"
 #include "chromeos/accelerometer/accelerometer_types.h"
 #include "chromeos/dbus/power_manager_client.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "mojo/public/cpp/bindings/interface_ptr_set.h"
 #include "ui/gfx/geometry/vector3d_f.h"
 
 namespace base {
 class TickClock;
@@ skipping 87 matching lines @@
 
   // Set the TickClock. This is only to be used by tests that need to
   // artificially and deterministically control the current time.
   void SetTickClockForTest(std::unique_ptr<base::TickClock> tick_clock);
 
   // Detect hinge rotation from base and lid accelerometers and automatically
   // start / stop maximize mode.
   void HandleHingeRotation(
       scoped_refptr<const chromeos::AccelerometerUpdate> update);
 
+  void OnGetSwitchStates(chromeos::PowerManagerClient::LidState lid_state,
+                         chromeos::PowerManagerClient::TabletMode tablet_mode);
+
   // Returns true if the lid was recently opened.
   bool WasLidOpenedRecently() const;
 
   // Enables MaximizeModeWindowManager, and determines the current state of
   // rotation lock.
   void EnterMaximizeMode();
 
   // Removes MaximizeModeWindowManager and resets the display rotation if there
   // is no rotation lock.
   void LeaveMaximizeMode();
@@ skipping 49 matching lines @@
   // incorrect calculations of hinge angles.
   gfx::Vector3dF base_smoothed_;
   gfx::Vector3dF lid_smoothed_;
 
   // Bindings for the TouchViewManager interface.
   mojo::BindingSet<mojom::TouchViewManager> bindings_;
 
   // The set of touchview observers to be notified about mode changes.
   mojo::InterfacePtrSet<mojom::TouchViewObserver> observers_;
 
+  base::WeakPtrFactory<MaximizeModeController> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_