ash: Add missing dependency on events_ozone

ash/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/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("ash.gyp") ],
@@ skipping 66 matching lines @@
   } else {
     sources -= [
       "host/ash_window_tree_host_x11.cc",
       "host/ash_window_tree_host_x11.h",
       "wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc",
       "wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_x11.h",
     ]
   }
 
   if (use_ozone) {
-    deps += [ "//ui/ozone" ]
+    deps += [
+      "//ui/events/ozone:events_ozone",
+      "//ui/ozone",
+    ]
   }
 
   if (is_chromeos) {
     deps += [
       "//device/bluetooth",
       "//ui/display",
       "//ui/display/util",
       "//chromeos",
       "//chromeos:power_manager_proto",
       "//ui/chromeos/resources",
@@ skipping 289 matching lines @@
       "//skia",
       "//testing/gtest",
       "//ui/accessibility",
     ]
 
     if (is_chromeos) {
       deps += [ "//ui/display" ]
     }
   }
 }