Split //ui/events/devices into two targets.

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/ozone/ozone.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
@@ skipping 147 matching lines @@
   ]
 
   if (use_x11) {
     sources += [ "x/events_x.cc" ]
     configs += [
       "//build/config/linux:glib",
       "//build/config/linux:x11",
     ]
     deps += [
       "//ui/events/devices",
+      "//ui/events/devices/x11",
       "//ui/gfx/x",
     ]
   }
 
   if (use_x11 || ozone_platform_x11) {
     deps += [ "//ui/events/x" ]
   }
 
   if (!is_chromeos && is_linux) {
     sources += [
@@ skipping 153 matching lines @@
       "test/cocoa_test_event_utils.mm",
     ]
   }
 
   if (use_x11) {
     sources += [
       "test/events_test_utils_x11.cc",
       "test/events_test_utils_x11.h",
     ]
     deps += [
-      "//ui/events/devices",
+      "//ui/events/devices/x11",
       "//ui/gfx/x",
     ]
   }
 
   if (use_x11 || use_ozone) {
     sources += [ "test/device_data_manager_test_api_impl.cc" ]
     deps += [ "//ui/events/devices" ]
   } else {
     sources += [ "test/device_data_manager_test_api_stub.cc" ]
   }
@@ skipping 66 matching lines @@
 
   include_dirs = [ "//testing/gmock/include" ]
 
   if (use_x11) {
     sources += [
       "devices/x11/device_data_manager_x11_unittest.cc",
       "x/events_x_unittest.cc",
     ]
     configs += [ "//build/config/linux:x11" ]
     deps += [
+      "//ui/events/devices/x11",
       "//ui/events/x",
       "//ui/gfx/x",
     ]
   }
 
   if (use_ozone) {
     sources += [
       "ozone/chromeos/cursor_controller_unittest.cc",
       "ozone/evdev/event_converter_evdev_impl_unittest.cc",
       "ozone/evdev/event_converter_test_util.cc",
@@ skipping 39 matching lines @@
   generate_jar_jni("motionevent_jni_headers") {
     jni_package = "ui"
     classes = [ "android/view/MotionEvent.class" ]
   }
 
   generate_jar_jni("keyevent_jni_headers") {
     jni_package = "ui"
     classes = [ "android/view/KeyEvent.class" ]
   }
 }