Reland: mus: Add views_mus_interactive_ui_tests target

ui/views/mus/interactive_ui_tests_mus.cc

Index: ui/views/mus/interactive_ui_tests_mus.cc
diff --git a/cc/proto/vector2d.proto b/ui/views/mus/interactive_ui_tests_mus.cc
similarity index 51%
copy from cc/proto/vector2d.proto
copy to ui/views/mus/interactive_ui_tests_mus.cc
index 15171844ffc443d28cae7c70e2149ac3989200ab..4181166def3b2ba59638842f27ffadd23d1071d5 100644
--- a/cc/proto/vector2d.proto
+++ b/ui/views/mus/interactive_ui_tests_mus.cc
@@ -2,13 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-syntax = "proto2";
+#include "ui/views/mus/views_mus_test_suite.h"
 
-option optimize_for = LITE_RUNTIME;
-
-package cc.proto;
-
-message Vector2d {
-  optional int64 x = 1;
-  optional int64 y = 2;
+int MasterProcessMain(int argc, char** argv) {
+  return views::ViewsMusTestSuite(argc, argv).RunTestsSerially();
 }