Add the missing callback to client for 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 eaa1883b5412bfa47a80521e28e28f204ed9af6e..8a481ea7022d21555233030c479fc847617b7659 100644
--- a/components/safe_browsing_db/v4_local_database_manager.cc
+++ b/components/safe_browsing_db/v4_local_database_manager.cc
@@ -490,9 +490,11 @@ bool V4LocalDatabaseManager::GetPrefixMatches(
 void V4LocalDatabaseManager::GetSeverestThreatTypeAndMetadata(
     SBThreatType* result_threat_type,
     ThreatMetadata* metadata,
+    FullHash* matching_full_hash,
     const std::vector<FullHashInfo>& full_hash_infos) {
   DCHECK(result_threat_type);
   DCHECK(metadata);
+  DCHECK(matching_full_hash);
 
   ThreatSeverity most_severe_yet = kLeastSeverity;
   for (const FullHashInfo& fhi : full_hash_infos) {
@@ -501,6 +503,7 @@ void V4LocalDatabaseManager::GetSeverestThreatTypeAndMetadata(
       most_severe_yet = severity;
       *result_threat_type = GetSBThreatTypeForList(fhi.list_id);
       *metadata = fhi.metadata;
+      *matching_full_hash = fhi.full_hash;
     }
   }
 }
@@ -594,8 +597,9 @@ void V4LocalDatabaseManager::OnFullHashResponse(
   }
 
   // Find out the most severe threat, if any, to report to the client.
-  GetSeverestThreatTypeAndMetadata(&check->result_threat_type,
-                                   &check->url_metadata, full_hash_infos);
+  GetSeverestThreatTypeAndMetadata(
+      &check->result_threat_type, &check->url_metadata,
+      &check->url_matching_full_hash, full_hash_infos);
   pending_checks_.erase(it);
   RespondToClient(std::move(check));
 }
@@ -662,6 +666,11 @@ void V4LocalDatabaseManager::RespondToClient(
     const std::set<FullHash> extension_ids(check->full_hashes.begin(),
                                            check->full_hashes.end());
     check->client->OnCheckExtensionsResult(extension_ids);
+  } else if (check->client_callback_type ==
+             ClientCallbackType::CHECK_RESOURCE_URL) {
+    DCHECK_EQ(1u, check->urls.size());
+    check->client->OnCheckResourceUrlResult(
+        check->urls[0], check->result_threat_type, check->matching_full_hash);
   } else {
     NOTREACHED() << "Unexpected client_callback_type encountered";
   }