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

ui/ozone/platform/caca/ozone_platform_caca.cc

Index: ui/ozone/platform/caca/ozone_platform_caca.cc
diff --git a/ui/ozone/platform/caca/ozone_platform_caca.cc b/ui/ozone/platform/caca/ozone_platform_caca.cc
index dfe67acb5683869ef49aef483aa1617f5533af41..6a35c6b75fe49b5b3b15277322d312edd56e71fc 100644
--- a/ui/ozone/platform/caca/ozone_platform_caca.cc
+++ b/ui/ozone/platform/caca/ozone_platform_caca.cc
@@ -7,6 +7,10 @@
 #include "ui/ozone/ozone_platform.h"
 #include "ui/ozone/platform/caca/caca_connection.h"
 
+#if defined(OS_CHROMEOS)
+#include "ui/ozone/common/chromeos/native_display_delegate_ozone.h"
+#endif
+
 namespace ui {
 
 OzonePlatformCaca::OzonePlatformCaca()
@@ -33,6 +37,14 @@ ui::CursorFactoryOzone* OzonePlatformCaca::GetCursorFactoryOzone() {
   return &cursor_factory_ozone_;
 }
 
+#if defined(OS_CHROMEOS)
+scoped_ptr<ui::NativeDisplayDelegate>
+OzonePlatformCaca::CreateNativeDisplayDelegate() {
+  return scoped_ptr<ui::NativeDisplayDelegate>(
+      new NativeDisplayDelegateOzone());
+}
+#endif
+
 OzonePlatform* CreateOzonePlatformCaca() { return new OzonePlatformCaca; }
 
 }  // namespace ui