Make Interaction Media Features MQ dynamic on Linux.

ui/events/devices/mojo/input_devices.mojom

 // Copyright 2016 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.
 
 module ui.mojom;
 
 import "ui/gfx/geometry/mojo/geometry.mojom";
 
 // Corresponds to ui::InputDeviceType
 enum InputDeviceType {
   INPUT_DEVICE_INTERNAL,
   INPUT_DEVICE_EXTERNAL,
   INPUT_DEVICE_UNKNOWN,
 };
 
 // Corresponds to ui::InputDevice.
 struct InputDevice {
   int32 id;
   InputDeviceType type;
   string name;
+  bool enabled;
   string sys_path;
   uint16 vendor_id;
   uint16 product_id;
 };
 
 // Corresponds to ui::StylusState.
 enum StylusState { REMOVED, INSERTED };
 
 // Corresponds to ui::TouchscreenDevice.
 struct TouchscreenDevice {
   // Base class.
   InputDevice input_device;
 
   gfx.mojom.Size size;
   int32 touch_points;
 };