Add more options to --screen-config flag.

ui/display/BUILD.gn

Index: ui/display/BUILD.gn
diff --git a/ui/display/BUILD.gn b/ui/display/BUILD.gn
index 7fc81d06b20b915d2b1d8cde36049c824e0d6a67..e40383c10c35a36c2a088c6c844d165f9a48c311 100644
--- a/ui/display/BUILD.gn
+++ b/ui/display/BUILD.gn
@@ -77,6 +77,7 @@ component("display") {
 
   deps = [
     "//base",
+    "//third_party/re2",
     "//ui/display/types",
     "//ui/display/util",
     "//ui/gfx",
@@ -190,6 +191,7 @@ test("display_unittests") {
     "display_change_notifier_unittest.cc",
     "display_list_unittest.cc",
     "display_unittest.cc",
+    "fake_display_snapshot_unittests.cc",
     "manager/display_layout_builder_unittest.cc",
     "manager/display_layout_unittest.cc",
     "manager/display_manager_utilities_unittest.cc",
@@ -207,6 +209,7 @@ test("display_unittests") {
     "//base",
     "//base/test:run_all_unittests",
     "//base/test:test_support",
+    "//testing/gmock",
     "//testing/gtest",
     "//ui/display/types",
     "//ui/display/util",