Remove useless InputDevice::name field

ui/events/devices/touchscreen_device.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/devices/touchscreen_device.h"
 
 #include <string>
 
 #include "ui/events/devices/input_device.h"
 
 namespace ui {
 
 TouchscreenDevice::TouchscreenDevice() : touch_points(0) {
 }
 
 TouchscreenDevice::TouchscreenDevice(unsigned int id,
                                      InputDeviceType type,
-                                     const std::string& name,
                                      const gfx::Size& size,
                                      int touch_points)
-    : InputDevice(id, type, name), size(size), touch_points(touch_points) {
+    : InputDevice(id, type), size(size), touch_points(touch_points) {
 }
 
 }  // namespace ui