Remove unused TouchEventCalibrate class.

ui/events/devices/x11/device_data_manager_x11.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_DEVICES_X11_DEVICE_DATA_MANAGER_X11_H_
 #define UI_EVENTS_DEVICES_X11_DEVICE_DATA_MANAGER_X11_H_
 
 // Generically-named #defines from Xlib is conflicting with symbols in GTest.
 // So many tests .cc file #undef Bool before including device_data_manager.h,
 // which makes Bool unrecognized in XInput2.h.
@@ skipping 238 matching lines @@
   // the actual device info, but rather inits the relevant valuator structures
   // to have safe default values for testing.
   void SetDeviceListForTest(const std::vector<int>& touchscreen,
                             const std::vector<int>& cmt_devices,
                             const std::vector<int>& other_devices);
 
   void SetValuatorDataForTest(XIDeviceEvent* xievent,
                               DataType type,
                               double value);
 
-  bool TouchEventNeedsCalibrate(int touch_device_id) const;
-
   // Sets the keys which are still allowed on a disabled keyboard device.
   void SetDisabledKeyboardAllowedKeys(
       scoped_ptr<std::set<KeyboardCode> > excepted_keys);
 
   // Disables and enables events from devices by device id.
   void DisableDevice(int deviceid);
   void EnableDevice(int deviceid);
 
   bool IsDeviceEnabled(int device_id) const;
 
@@ skipping 121 matching lines @@
 
   unsigned char button_map_[256];
   int button_map_count_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceDataManagerX11);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_DEVICES_X11_DEVICE_DATA_MANAGER_X11_H_