Validate origins when generating subdomain tokens

tools/origin_trials/validate_subdomain_origin/BUILD.gn

Index: tools/origin_trials/validate_subdomain_origin/BUILD.gn
diff --git a/chrome/tools/mac_helpers/BUILD.gn b/tools/origin_trials/validate_subdomain_origin/BUILD.gn
similarity index 57%
copy from chrome/tools/mac_helpers/BUILD.gn
copy to tools/origin_trials/validate_subdomain_origin/BUILD.gn
index 2beb33b6c8a30841f408f778577126be8363d87b..2a2f770a83893342ee69d426e12900ab7d12b909 100644
--- a/chrome/tools/mac_helpers/BUILD.gn
+++ b/tools/origin_trials/validate_subdomain_origin/BUILD.gn
@@ -2,20 +2,19 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-executable("infoplist_strings_tool") {
-  configs += [ "//build/config/compiler:wexit_time_destructors" ]
+import("//build/symlink.gni")
 
+executable("validate_subdomain_origin") {
+  output_name = "validate_subdomain_origin"
   sources = [
-    "infoplist_strings_util.mm",
+    "check_subdomain_origin.cc",
   ]
 
+  configs += [ "//build/config/compiler:wexit_time_destructors" ]
+
   deps = [
     "//base",
-    "//base:i18n",
-    "//chrome:strings",
-    "//third_party/icu",
-    "//ui/base:ui_data_pack",
+    "//net",
+    "//url",
   ]
-
-  libs = [ "Foundation.framework" ]
 }