GN: Get os="chromeos" use_ozone=true to compile

ui/views/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")
 
 gypi_values = exec_script(
     "//build/gypi_to_gn.py",
     [ rebase_path("views.gyp") ],
@@ skipping 125 matching lines @@
       "test/ui_controls_factory_desktop_aurax11.h",
     ]
   }
   if (use_aura) {
     sources += gypi_values.views_test_support_aura_sources
     deps += [ "//ui/aura:test_support" ]
   }
   if (use_x11) {
     deps += [ "//ui/gfx/x" ]
   }
+  if (use_ozone) {
+    sources -= [
+      "test/x11_property_change_waiter.cc",
+    ]
+  }
 }
 
 test("views_unittests") {
   sources = gypi_values.views_unittests_sources
 
   deps = [
     ":test_support",
     "//base",
     "//base:i18n",
     "//base/allocator",
@@ skipping 101 matching lines @@
       "//testing/gtest",
       "//ui/aura",
       "//ui/compositor",
       "//ui/resources",
       "//ui/resources:ui_test_pak",
       "//ui/strings",
       "//ui/wm",
     ]
   }
 }