Move all event related devices from ui/events/ to ui/events/devices/

ui/events/x/device_list_cache_x.h

-// Copyright (c) 2012 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_X_DEVICE_LIST_CACHE_X_H_
-#define UI_EVENTS_X_DEVICE_LIST_CACHE_X_H_
-
-#include <X11/extensions/XInput.h>
-#include <X11/extensions/XInput2.h>
-
-#include <map>
-
-#include "base/basictypes.h"
-#include "ui/events/events_base_export.h"
-
-template <typename T> struct DefaultSingletonTraits;
-
-typedef struct _XDisplay Display;
-
-template <typename T>
-struct DeviceList {
-  DeviceList() : devices(NULL), count(0) {
-  }
-  T& operator[] (int x) {
-    return devices[x];
-  }
-  const T& operator[](int x) const { return devices[x]; }
-  T* devices;
-  int count;
-};
-
-typedef struct DeviceList<XDeviceInfo> XDeviceList;
-typedef struct DeviceList<XIDeviceInfo> XIDeviceList;
-
-namespace ui {
-
-// A class to cache the current XInput device list. This minimized the
-// round-trip time to the X server whenever such a device list is needed. The
-// update function will be called on each incoming XI_HierarchyChanged event.
-class EVENTS_BASE_EXPORT DeviceListCacheX {
- public:
-  static DeviceListCacheX* GetInstance();
-
-  void UpdateDeviceList(Display* display);
-
-  // Returns the list of devices associated with |display|. Uses the old X11
-  // protocol to get the list of the devices.
-  const XDeviceList& GetXDeviceList(Display* display);
-
-  // Returns the list of devices associated with |display|. Uses the newer
-  // XINPUT2 protocol to get the list of devices. Before making this call, make
-  // sure that XInput2 support is available (e.g. by calling
-  // IsXInput2Available()).
-  const XIDeviceList& GetXI2DeviceList(Display* display);
-
- private:
-  friend struct DefaultSingletonTraits<DeviceListCacheX>;
-
-  DeviceListCacheX();
-  ~DeviceListCacheX();
-
-  std::map<Display*, XDeviceList> x_dev_list_map_;
-  std::map<Display*, XIDeviceList> xi_dev_list_map_;
-
-  DISALLOW_COPY_AND_ASSIGN(DeviceListCacheX);
-};
-
-}  // namespace ui
-
-#endif  // UI_EVENTS_X_DEVICE_LIST_CACHE_X_H_
-