cros: Do not schedule attempt when behind captive portal with response 200 is detected

chrome/browser/chromeos/net/network_portal_detector_impl.cc

Index: chrome/browser/chromeos/net/network_portal_detector_impl.cc
diff --git a/chrome/browser/chromeos/net/network_portal_detector_impl.cc b/chrome/browser/chromeos/net/network_portal_detector_impl.cc
index b4691cdd4f7e92e6ed87b1cbacbae275e4599dad..c3886f6f12393d37ace785460527f4e095f2f215 100644
--- a/chrome/browser/chromeos/net/network_portal_detector_impl.cc
+++ b/chrome/browser/chromeos/net/network_portal_detector_impl.cc
@@ -551,8 +551,15 @@ void NetworkPortalDetectorImpl::OnAttemptCompleted(
   }
 
   // Observers (via OnDetectionCompleted) may already schedule new attempt.
-  if (is_idle())
-    ScheduleAttempt(results.retry_after_delta);
+  if (!is_idle())
+    return;
+
+  // If behind a captive portal and the response code was 200 (OK), do not
+  // schedule a new attempt.
+  if (state.status == CAPTIVE_PORTAL_STATUS_PORTAL && response_code == 200)
+    return;
+
+  ScheduleAttempt(results.retry_after_delta);
 }
 
 void NetworkPortalDetectorImpl::Observe(