Change device IDs from unsigned to signed.

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 186 matching lines @@
   // Extract the start/end timestamps from CMT events. User must first verify
   // the event with HasGestureTimes. Pointers shouldn't be NULL.
   void GetGestureTimes(const base::NativeEvent& native_event,
                        double* start_time,
                        double* end_time);
 
   // Normalize the data value on deviceid to fall into [0, 1].
   // *value = (*value - min_value_of_tp) / (max_value_of_tp - min_value_of_tp)
   // Returns true and sets the normalized value in|value| if normalization is
   // successful. Returns false and |value| is unchanged otherwise.
-  bool NormalizeData(unsigned int deviceid,
+  bool NormalizeData(int deviceid,
                      const DataType type,
                      double* value);
 
   // Extract the range of the data type. Return true if the range is available
   // and written into min & max, false if the range is not available.
-  bool GetDataRange(unsigned int deviceid,
+  bool GetDataRange(int deviceid,
                     const DataType type,
                     double* min,
                     double* max);
 
   // Sets up relevant valuator informations for device ids in the device lists.
   // This function is only for test purpose. It does not query the X server for
   // the actual device info, but rather inits the relevant valuator structures
   // to have safe default values for testing.
-  void SetDeviceListForTest(const std::vector<unsigned int>& touchscreen,
-                            const std::vector<unsigned int>& cmt_devices);
+  void SetDeviceListForTest(const std::vector<int>& touchscreen,
+                            const std::vector<int>& cmt_devices);
 
   void SetValuatorDataForTest(XIDeviceEvent* xievent,
                               DataType type,
                               double value);
 
-  bool TouchEventNeedsCalibrate(unsigned int touch_device_id) const;
+  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(unsigned int deviceid);
-  void EnableDevice(unsigned int deviceid);
+  void DisableDevice(int deviceid);
+  void EnableDevice(int deviceid);
 
   // Returns true if |native_event| should be blocked.
   bool IsEventBlocked(const base::NativeEvent& native_event);
 
   const std::vector<int>& master_pointers() const {
     return master_pointers_;
   }
 
  protected:
   // DeviceHotplugEventObserver:
@@ skipping 60 matching lines @@
   // a specified slot of a device. Defaults to 0 if the valuator for that slot
   // was not specified in an earlier event. With MT-B/XI2.2, valuators in an
   // XEvent are not reported if the values haven't changed from the previous
   // event. So it is necessary to remember these valuators so that chrome
   // doesn't think X/device doesn't know about the valuators. We currently
   // use this only on touchscreen devices.
   std::vector<double> last_seen_valuator_[kMaxDeviceNum][kMaxSlotNum];
 
   // Map that stores meta-data for blocked keyboards. This is needed to restore
   // devices when they are re-enabled.
-  std::map<unsigned int, ui::KeyboardDevice> blocked_keyboards_;
+  std::map<int, ui::KeyboardDevice> blocked_keyboards_;
 
   // X11 atoms cache.
   X11AtomCache atom_cache_;
 
   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_