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 4393b72a2f6fa22e9694e8d1052dd24c2fd6aa1c..ac4a3f0a5e8e23a9835a31814f32b818bce2488e 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1726,7 +1726,6 @@ 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",
@@ -2022,6 +2021,10 @@ 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" ]
     }