Add all components to "gn check".

ui/ozone/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("//ui/ozone/ozone.gni")
 import("//testing/test.gni")
 
 # The list of platforms that will be built.
 ozone_platforms = []
 
@@ skipping 102 matching lines @@
     "public/ozone_platform.h",
     "public/ozone_switches.cc",
     "public/ozone_switches.h",
     constructor_list_cc_file,
     platform_list_cc_file,
     platform_list_h_file,
   ]
 
   defines = [ "OZONE_IMPLEMENTATION" ]
 
+  public_deps = [
+    ":ozone_base",
+  ]
+
   deps =
       [
         ":generate_constructor_list",
         ":generate_ozone_platform_list",
-        ":ozone_base",
         "//base",
         "//ipc",
         "//skia",
         "//ui/display/types",
         "//ui/display/util",
         "//ui/events",
         "//ui/events/devices",
         "//ui/events/ozone:events_ozone",
         "//ui/gfx",
         "//ui/gfx/geometry",
@@ skipping 52 matching lines @@
   sources = [
     "run_all_unittests.cc",
   ]
 
   deps = [
            "//base/test:test_support",
            "//testing/gtest",
            "//ui/gfx/geometry",
          ] + ozone_platform_test_deps
 }