S: GetThreatSeverity should handle the case of CheckResourceUrl.

components/safe_browsing_db/v4_local_database_manager.cc

Index: components/safe_browsing_db/v4_local_database_manager.cc
diff --git a/components/safe_browsing_db/v4_local_database_manager.cc b/components/safe_browsing_db/v4_local_database_manager.cc
index 24013cc83d7a99446047b450ff670f12918cc803..9473604324915093f307a61c12d29e073a199957 100644
--- a/components/safe_browsing_db/v4_local_database_manager.cc
+++ b/components/safe_browsing_db/v4_local_database_manager.cc
@@ -89,8 +89,15 @@ ThreatSeverity GetThreatSeverity(const ListIdentifier& list_id) {
     case UNWANTED_SOFTWARE:
       return 1;
     case API_ABUSE:
+    case CLIENT_INCIDENT:
       return 2;
-    default:
+
+    case THREAT_TYPE_UNSPECIFIED:
+    case POTENTIALLY_HARMFUL_APPLICATION:
+    case SOCIAL_ENGINEERING:
+    case CSD_WHITELIST:
+    case CSD_DOWNLOAD_WHITELIST:
+    case SUBRESOURCE_FILTER:
       NOTREACHED() << "Unexpected ThreatType encountered: "
                    << list_id.threat_type();
       return kLeastSeverity;