ozone: evdev: Convert CHECKs to DCHECKs per style guide

ui/events/ozone/evdev/event_factory_evdev.cc

 // 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.
 
 #include "ui/events/ozone/evdev/event_factory_evdev.h"
 
 #include <fcntl.h>
 #include <linux/input.h>
 
 #include "base/debug/trace_event.h"
@@ skipping 122 matching lines @@
 
 EventFactoryEvdev::EventFactoryEvdev(
     CursorDelegateEvdev* cursor,
     DeviceManager* device_manager)
     : device_manager_(device_manager),
       cursor_(cursor),
       dispatch_callback_(
           base::Bind(base::IgnoreResult(&EventFactoryEvdev::DispatchUiEvent),
                      base::Unretained(this))),
       weak_ptr_factory_(this) {
-  CHECK(device_manager_);
+  DCHECK(device_manager_);
 }
 
 EventFactoryEvdev::~EventFactoryEvdev() { STLDeleteValues(&converters_); }
 
 void EventFactoryEvdev::DispatchUiEvent(Event* event) {
   DispatchEvent(event);
 }
 
 void EventFactoryEvdev::AttachInputDevice(
     const base::FilePath& path,
     scoped_ptr<EventConverterEvdev> converter) {
   TRACE_EVENT1("ozone", "AttachInputDevice", "path", path.value());
-  CHECK(ui_task_runner_->RunsTasksOnCurrentThread());
+  DCHECK(ui_task_runner_->RunsTasksOnCurrentThread());
 
   // If we have an existing device, detach it. We don't want two
   // devices with the same name open at the same time.
   if (converters_[path])
     DetachInputDevice(path);
 
   // Add initialized device to map.
   converters_[path] = converter.release();
   converters_[path]->Start();
 }
@@ skipping 34 matching lines @@
   if (!ui_task_runner_.get()) {
     ui_task_runner_ = base::ThreadTaskRunnerHandle::Get();
     // Scan & monitor devices.
     device_manager_->AddObserver(this);
     device_manager_->ScanDevices(this);
   }
 }
 
 void EventFactoryEvdev::DetachInputDevice(const base::FilePath& path) {
   TRACE_EVENT1("ozone", "DetachInputDevice", "path", path.value());
-  CHECK(ui_task_runner_->RunsTasksOnCurrentThread());
+  DCHECK(ui_task_runner_->RunsTasksOnCurrentThread());
 
   // Remove device from map.
   scoped_ptr<EventConverterEvdev> converter(converters_[path]);
   converters_.erase(path);
 
   if (converter) {
     // Cancel libevent notifications from this converter. This part must be
     // on UI since the polling happens on UI.
     converter->Stop();
 
@@ skipping 12 matching lines @@
     MouseEvent mouse_event(ET_MOUSE_MOVED,
                            cursor_->location(),
                            cursor_->location(),
                            modifiers_.GetModifierFlags(),
                            /* changed_button_flags */ 0);
     DispatchEvent(&mouse_event);
   }
 }
 
 }  // namespace ui