ozone: dri: Fix undefined references in DRI platform GN build

ui/ozone/platform/dri/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/linux/pkg_config.gni")
 import("//ui/ozone/ozone.gni")
 
 declare_args() {
   use_mesa_platform_null = false
 }
@@ skipping 57 matching lines @@
     "native_display_delegate_proxy.h",
     "overlay_plane.cc",
     "overlay_plane.h",
     "scoped_drm_types.cc",
     "scoped_drm_types.h",
     "screen_manager.cc",
     "screen_manager.h",
     "scanout_buffer.h",
   ]
 
+  defines = [ "OZONE_IMPLEMENTATION" ]
+
   deps = [
     "//base",
     "//skia",
     "//ipc",
     "//ui/base",
     "//ui/display/types",
     "//ui/display/util",
     "//ui/events",
     "//ui/events/devices",
     "//ui/events/ozone:events_ozone_evdev",
@@ skipping 21 matching lines @@
       "//ui/events/ozone:events_ozone_layout",
     ]
   }
 
   source_set("dri_unittests") {
     testonly = true
     sources = [
       "dri_surface_unittest.cc",
       "dri_window_delegate_impl_unittest.cc",
       "hardware_display_controller_unittest.cc",
-      "hardware_display_manager_unittest.cc",
+      "hardware_display_plane_manager_unittest.cc",
       "screen_manager_unittest.cc",
       "test/mock_dri_wrapper.cc",
       "test/mock_dri_wrapper.h",
     ]
 
     deps = [
-      ":dri_common",
       "//skia",
       "//testing/gtest",
+      "//ui/ozone",
     ]
+
+    public_configs = [ ":libdrm" ]
   }
 }
 
 if (ozone_platform_gbm) {
   pkg_config("libgbm") {
     packages = [ "gbm" ]
   }
 
   source_set("gbm") {
     sources = [
@@ skipping 21 matching lines @@
       "//ui/events/ozone:events_ozone_layout",
     ]
 
     public_configs = [ ":libgbm" ]
 
     if (use_mesa_platform_null) {
       defines += [ "USE_MESA_PLATFORM_NULL" ]
     }
   }
 }