Split ui/display types into separate module and have Ozone depend on it

ui/ozone/platform/test/ozone_platform_test.cc

Index: ui/ozone/platform/test/ozone_platform_test.cc
diff --git a/ui/ozone/platform/test/ozone_platform_test.cc b/ui/ozone/platform/test/ozone_platform_test.cc
index 6428c79286e1676b4717c7ae69a293d54685b518..35043181950600404b41b7c5e33b8276fca2f431 100644
--- a/ui/ozone/platform/test/ozone_platform_test.cc
+++ b/ui/ozone/platform/test/ozone_platform_test.cc
@@ -9,6 +9,10 @@
 #include "ui/ozone/ozone_platform.h"
 #include "ui/ozone/ozone_switches.h"
 
+#if defined(OS_CHROMEOS)
+#include "ui/ozone/common/chromeos/native_display_delegate_ozone.h"
+#endif
+
 namespace ui {
 
 OzonePlatformTest::OzonePlatformTest(const base::FilePath& dump_file)
@@ -33,6 +37,14 @@ ui::CursorFactoryOzone* OzonePlatformTest::GetCursorFactoryOzone() {
   return &cursor_factory_ozone_;
 }
 
+ui::NativeDisplayDelegate* OzonePlatformTest::CreateNativeDisplayDelegate() {
+#if defined(OS_CHROMEOS)
+  return new NativeDisplayDelegateOzone();
+#else
+  return NULL;
+#endif
+}
+
 OzonePlatform* CreateOzonePlatformTest() {
   CommandLine* cmd = CommandLine::ForCurrentProcess();
   base::FilePath location = base::FilePath("/dev/null");