Add initial version of captive portal list checking.

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 8c91b0534754f8a6a3731140536d6d8dddac6abf..f7dbbb93ac06e3ba6664f0a5982828ffe2a1a57e 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1722,7 +1722,6 @@ test("browser_tests") {
       "../browser/speech/extension_api/tts_extension_apitest.cc",
       "../browser/speech/speech_recognition_browsertest.cc",
       "../browser/spellchecker/spellcheck_service_browsertest.cc",
-      "../browser/ssl/captive_portal_blocking_page_browsertest.cc",
       "../browser/ssl/cert_verifier_browser_test.cc",
       "../browser/ssl/cert_verifier_browser_test.h",
       "../browser/ssl/certificate_reporting_test_utils.cc",
@@ -2018,6 +2017,10 @@ test("browser_tests") {
           [ "../browser/payments/site_per_process_payments_browsertest.cc" ]
     }
 
+    if (enable_captive_portal_detection) {
+      sources +=
+          [ "../browser/ssl/captive_portal_blocking_page_browsertest.cc" ]
+    }
     if (!enable_one_click_signin) {
       sources -= [ "../browser/ui/sync/one_click_signin_links_delegate_impl_browsertest.cc" ]
     }