Move touchscreen device caching to DeviceDataManager

ui/events/BUILD.gn

 # 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.
 
 import("//build/config/ui.gni")
 
 static_library("dom4_keycode_converter") {
   sources = [
     "keycodes/dom4/keycode_converter.cc",
     "keycodes/dom4/keycode_converter.h",
     "keycodes/dom4/keycode_converter_data.h",
   ]
 
   deps = [ "//base" ]
 }
 
 component("events_base") {
   sources = [
     "device_data_manager.cc",
     "device_data_manager.h",
     "event_constants.h",
     "event_switches.cc",
     "event_switches.h",
     "events_base_export.h",
     "gesture_event_details.cc",
     "gesture_event_details.h",
     "gestures/gesture_configuration.cc",
     "gestures/gesture_configuration.h",
+    "device_hotplug_event_observer.h",

[Daniel Erat, 2014/09/10 16:51:24]

fix alphabetization

[dnicoara, 2014/09/10 18:05:36]

Done.

     "keycodes/keyboard_code_conversion.cc",
     "keycodes/keyboard_code_conversion.h",
     "keycodes/keyboard_code_conversion_android.cc",
     "keycodes/keyboard_code_conversion_android.h",
     "keycodes/keyboard_code_conversion_mac.h",
     "keycodes/keyboard_code_conversion_mac.mm",
     "keycodes/keyboard_code_conversion_win.cc",
     "keycodes/keyboard_code_conversion_win.h",
     "keycodes/keyboard_codes.h",
     "latency_info.cc",
     "latency_info.h",
+    "touchscreen_device.cc",
+    "touchscreen_device.h",
   ]
 
   defines = [ "EVENTS_BASE_IMPLEMENTATION" ]
 
   deps = [
     ":dom4_keycode_converter",
     "//base",
     "//base/third_party/dynamic_annotations",
     "//skia",
     "//ui/events/platform",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 
   forward_dependent_configs_from = [ "//ui/gfx" ]
 
   if (use_x11) {
     configs += [ "//build/config/linux:x11" ]
 
     sources += [
       "keycodes/keyboard_code_conversion_x.cc",
       "keycodes/keyboard_code_conversion_x.h",
       "x/device_data_manager_x11.cc",
       "x/device_data_manager_x11.h",
       "x/device_list_cache_x.cc",
       "x/device_list_cache_x.h",
+      "x/hotplug_event_handler_x11.cc",
+      "x/hotplug_event_handler_x11.h",
       "x/keysym_to_unicode.cc",
       "x/keysym_to_unicode.h",
       "x/touch_factory_x11.cc",
       "x/touch_factory_x11.h",
     ]
   }
 }
 
 component("events") {
   sources = [
@@ skipping 232 matching lines @@
       "ozone/evdev/touch_event_converter_evdev_unittest.cc",
     ]
   }
 
   if (use_aura) {
     sources += [
       "gestures/gesture_provider_aura_unittest.cc",
     ]
   }
 }