Only block internal touchpad and allow external mice to continue working in maximize mode.

ash/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_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_
 #define ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_
 
 #include "ash/accelerometer/accelerometer_observer.h"
 #include "ash/ash_export.h"
 #include "ash/display/display_manager.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace ui {
 class EventHandler;
 }
 
 namespace ash {
 
+class MaximizeModeControllerTest;
 class MaximizeModeEventBlocker;
 
 // MaximizeModeController listens to accelerometer events and automatically
 // enters and exits maximize mode when the lid is opened beyond the triggering
 // angle and rotates the display to match the device when in maximize mode.
 class ASH_EXPORT MaximizeModeController : public AccelerometerObserver {
  public:
   MaximizeModeController();
   virtual ~MaximizeModeController();
 
@@ skipping 16 matching lines @@
   // True if it is possible to enter maximize mode in the current
   // configuration. If this returns false, it should never be the case that
   // maximize mode becomes enabled.
   bool CanEnterMaximizeMode();
 
   // AccelerometerObserver:
   virtual void OnAccelerometerUpdated(const gfx::Vector3dF& base,
                                       const gfx::Vector3dF& lid) OVERRIDE;
 
  private:
+  friend class MaximizeModeControllerTest;
+
   // Detect hinge rotation from |base| and |lid| accelerometers and
   // automatically start / stop maximize mode.
   void HandleHingeRotation(const gfx::Vector3dF& base,
                            const gfx::Vector3dF& lid);
 
   // Detect screen rotation from |lid| accelerometer and automatically rotate
   // screen.
   void HandleScreenRotation(const gfx::Vector3dF& lid);
 
   // Sets the display rotation and suppresses display notifications.
@@ skipping 15 matching lines @@
 
   // True when the screen's orientation is being changed.
   bool in_set_screen_rotation_;
 
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_