Add new InputDeviceManager interface.

ash/wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc

Index: ash/wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc
diff --git a/ash/wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc b/ash/wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc
index 6c76b40b45332293844b8e396b80c6ba203cd6e1..d8e847c1de72d606da7a3806f8cc263beed81e23 100644
--- a/ash/wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc
+++ b/ash/wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc
@@ -98,7 +98,7 @@ ScopedDisableInternalMouseAndKeyboardX11::
     }
 
     for (const ui::InputDevice& device :
-         device_data_manager->keyboard_devices()) {
+         device_data_manager->GetKeyboardDevices()) {
       if (device.type == ui::InputDeviceType::INPUT_DEVICE_INTERNAL) {
         keyboard_device_id_ = device.id;
         device_data_manager->DisableDevice(keyboard_device_id_);