Make Interaction Media Features MQ dynamic on Linux.

ui/events/ozone/evdev/gamepad_event_converter_evdev.cc

 // Copyright 2017 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.
 
 #include "ui/events/ozone/evdev/gamepad_event_converter_evdev.h"
 
 #include <errno.h>
 #include <linux/input.h>
 #include <stddef.h>
 
@@ skipping 114 matching lines @@
       if (abs_info.fuzz == 0) {
         abs_info.fuzz = abs_info.flat * 0.25f;
       }
       mapper_(EV_ABS, code, &mapped_type, &mapped_code);
       axes_[code] = Axis(abs_info, mapped_type, mapped_code);
     }
   }
 }
 
 GamepadEventConverterEvdev::~GamepadEventConverterEvdev() {
-  DCHECK(!enabled_);
+  DCHECK(!IsEnabled());
 }
 
 bool GamepadEventConverterEvdev::HasGamepad() const {
   return true;
 }
 
 void GamepadEventConverterEvdev::OnFileCanReadWithoutBlocking(int fd) {
   TRACE_EVENT1("evdev",
                "GamepadEventConverterEvdev::OnFileCanReadWithoutBlocking", "fd",
                fd);
   while (true) {
     input_event input;
     ssize_t read_size = read(fd, &input, sizeof(input));
     if (read_size != sizeof(input)) {
       if (errno == EINTR || errno == EAGAIN)
         return;
       if (errno != ENODEV)
         PLOG(ERROR) << "error reading device " << path_.value();
       Stop();
       return;
     }
 
-    if (!enabled_)
+    if (!IsEnabled())
       return;
 
     ProcessEvent(input);
   }
 }
 void GamepadEventConverterEvdev::OnDisabled() {
   ResetGamepad();
 }
 
 void GamepadEventConverterEvdev::ProcessEvent(const input_event& evdev_ev) {
@@ skipping 139 matching lines @@
 
 void GamepadEventConverterEvdev::OnSync(const base::TimeTicks& timestamp) {
   if (will_send_frame_) {
     GamepadEvent event(input_device_.id, GamepadEventType::FRAME, 0, 0,
                        timestamp);
     dispatcher_->DispatchGamepadEvent(event);
     will_send_frame_ = false;
   }
 }
 }  //  namespace ui