cros: no active portal check when successfully behind portal

chrome/browser/chromeos/net/network_portal_detector_impl.h

Index: chrome/browser/chromeos/net/network_portal_detector_impl.h
diff --git a/chrome/browser/chromeos/net/network_portal_detector_impl.h b/chrome/browser/chromeos/net/network_portal_detector_impl.h
index 042f6bd87f2df3bdeea695e0dd67592fed03ff22..c28afefd7577232dc4a2a393d36cd2cc2dc95bfd 100644
--- a/chrome/browser/chromeos/net/network_portal_detector_impl.h
+++ b/chrome/browser/chromeos/net/network_portal_detector_impl.h
@@ -84,6 +84,8 @@ class NetworkPortalDetectorImpl : public NetworkPortalDetector,
     STATE_PORTAL_CHECK_PENDING,
     // Portal check is in progress.
     STATE_CHECKING_FOR_PORTAL,
+    // No portal check when successfully behind portal.
+    STATE_BEHIND_PORTAL_IDLE,
   };
 
   struct DetectionAttemptCompletedReport {
@@ -170,6 +172,9 @@ class NetworkPortalDetectorImpl : public NetworkPortalDetector,
   bool is_checking_for_portal() const {
     return state_ == STATE_CHECKING_FOR_PORTAL;
   }
+  bool is_behind_portal_idle() const {
+    return state_ == STATE_BEHIND_PORTAL_IDLE;
+  }
 
   int same_detection_result_count_for_testing() const {
     return same_detection_result_count_;