Remove xkbcommon support.

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")
 import("//testing/test.gni")
-import("//ui/events/xkb.gni")
 
 static_library("dom_keycode_converter") {
   sources = [
     "keycodes/dom/dom_code.h",
     "keycodes/dom/dom_key.h",
     "keycodes/dom/dom_key_data.inc",
     "keycodes/dom/keycode_converter.cc",
     "keycodes/dom/keycode_converter.h",
     "keycodes/dom/keycode_converter_data.inc",
   ]
@@ skipping 47 matching lines @@
     sources += [
       "keycodes/keyboard_code_conversion_x.cc",
       "keycodes/keyboard_code_conversion_x.h",
       "x/keysym_to_unicode.cc",
       "x/keysym_to_unicode.h",
     ]
 
     deps += [ "//ui/gfx/x" ]
   }
 
-  if (use_x11 || use_xkbcommon) {
+  if (use_x11) {
     sources += [
       "keycodes/keyboard_code_conversion_xkb.cc",
       "keycodes/keyboard_code_conversion_xkb.h",
       "keycodes/xkb_keysym.h",
     ]
   }
 }
 
 component("events") {
   sources = [
@@ skipping 222 matching lines @@
       "ozone/chromeos/cursor_controller_unittest.cc",
       "ozone/evdev/event_converter_evdev_impl_unittest.cc",
       "ozone/evdev/event_converter_test_util.cc",
       "ozone/evdev/event_device_info_unittest.cc",
       "ozone/evdev/event_device_test_util.cc",
       "ozone/evdev/input_injector_evdev_unittest.cc",
       "ozone/evdev/tablet_event_converter_evdev_unittest.cc",
       "ozone/evdev/touch_event_converter_evdev_unittest.cc",
       "ozone/evdev/touch_noise/touch_noise_finder_unittest.cc",
     ]
-    if (use_x11 || use_xkbcommon) {
+    if (use_x11) {
       sources += [ "ozone/layout/xkb/xkb_keyboard_layout_engine_unittest.cc" ]
     }
     deps += [
       "//ui/events/ozone:events_ozone",
       "//ui/events/ozone:events_ozone_evdev",
       "//ui/events/ozone:events_ozone_layout",
     ]
   }
 }
 
 if (is_nacl) {
   source_set("latency_info") {
     sources = [
       "ipc/latency_info_param_traits.cc",
       "ipc/latency_info_param_traits.h",
       "latency_info.cc",
       "latency_info.h",
     ]
   }
 }