Fix compositor_unittests with Ozone X11.

ui/compositor/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")
 
 component("compositor") {
   sources = [
     "callback_layer_animation_observer.cc",
@@ skipping 147 matching lines @@
     "//ui/gl:test_support",
   ]
 
   if (use_x11) {
     configs += [ "//build/config/linux:x11" ]
     deps += [ "//ui/gfx/x" ]
   }
 
   if (use_ozone) {
     sources += [ "test/test_compositor_host_ozone.cc" ]
+
+    deps += [ "//ui/ozone" ]
   } else if (use_x11) {
     sources += [ "test/test_compositor_host_x11.cc" ]
   }
 }
 
 test("compositor_unittests") {
   sources = [
     "callback_layer_animation_observer_unittest.cc",
     "compositor_unittest.cc",
     "layer_animation_element_unittest.cc",
@@ skipping 24 matching lines @@
     "//ui/base",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/gl",
     "//ui/resources",
   ]
   if (is_linux) {
     deps += [ "//third_party/mesa:osmesa" ]
   }
 }