Make Interaction Media Features MQ dynamic on Linux.

ui/events/ozone/evdev/event_converter_evdev.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 UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
 #define UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
 
 #include <stdint.h>
 
 #include <set>
@@ skipping 35 matching lines @@
   // Start reading events.
   void Start();
 
   // Stop reading events.
   void Stop();
 
   // Enable or disable this device. A disabled device still polls for
   // input and can update state but must not dispatch any events to UI.
   void SetEnabled(bool enabled);
 
+  bool IsEnabled() const;
+
   // Cleanup after we stop reading events (release buttons, etc).
   virtual void OnStopped();
 
   // Prepare for disable (e.g. should release keys/buttons/touches).
   virtual void OnDisabled();
 
   // Start or restart (e.g. should reapply keys/buttons/touches).
   virtual void OnEnabled();
 
   // Dump recent events into a file.
@@ skipping 56 matching lines @@
   // Path to input device.
   base::FilePath path_;
 
   // Input device information, including id (which uniquely identifies an
   // event converter) and type.
   InputDevice input_device_;
 
   // Whether we're polling for input on the device.
   bool watching_ = false;
 
-  // Whether events should be dispatched to UI.
-  bool enabled_ = false;
-
   // Controller for watching the input fd.
   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(EventConverterEvdev);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_