Dump property values for the touch log source

ui/events/ozone/evdev/libgestures_glue/gesture_property_provider.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_OZONE_EVDEV_LIBGESTURES_GLUE_GESTURE_PROPERTY_PROVIDER_H_
 #define UI_EVENTS_OZONE_EVDEV_LIBGESTURES_GLUE_GESTURE_PROPERTY_PROVIDER_H_
 
 #include <gestures/gestures.h>
 #include <libevdev/libevdev.h>
 
@@ skipping 78 matching lines @@
 
   // Get the GesturesProp object. Returns NULL if not found.
   //
   // The user may use the object returned to set/get the property value in the
   // gesture library's memory. Note that the values in preferences are not
   // synced with the ones here in realtime - they are only applied from the
   // preference side in a single way once appropriate (e.g., when the user
   // clicked "OK").
   GesturesProp* GetProperty(const DeviceId device_id, const std::string& name);
 
+  // Get the names of all properties of one device. Mostly used for the logging
+  // purpose.
+  std::vector<std::string> GetPropertyNamesById(const DeviceId device_id);
+
+  // Get the (Evdev) device name. Mostly used for the logging purpose.
+  std::string GetDeviceNameById(const DeviceId device_id);
+
  private:
   friend class GesturesPropFunctionsWrapper;
 
   // Mapping table from a device id to its device pointer.
   typedef std::map<DeviceId, DevicePtr> DeviceMap;
 
   // Mapping table from a device id to its property data.
   // GestureDevicePropertyData contains both properties in use and default
   // properties whose values will be applied upon the device attachment.
   typedef base::ScopedPtrHashMap<DeviceId, internal::GestureDevicePropertyData>
@@ skipping 215 matching lines @@
   // Handler function pointers and the data to be passed to them when the
   // property is accessed.
   GesturesPropGetHandler get_;
   GesturesPropSetHandler set_;
   void* handler_data_;
 
   DISALLOW_COPY_AND_ASSIGN(GesturesProp);
 };
 
 #endif  // UI_EVENTS_OZONE_EVDEV_LIBGESTURES_GLUE_GESTURE_PROPERTY_PROVIDER_H_