[Mojo Loading] Cancel loading in a timely manner

content/child/resource_dispatcher.cc

Index: content/child/resource_dispatcher.cc
diff --git a/content/child/resource_dispatcher.cc b/content/child/resource_dispatcher.cc
index 24afd8a80414438645b5c575a23c3b166f4ab70b..38efe244a9a2e2f1ed58b6aa3dddfe07d929186b 100644
--- a/content/child/resource_dispatcher.cc
+++ b/content/child/resource_dispatcher.cc
@@ -417,6 +417,8 @@ bool ResourceDispatcher::RemovePendingRequest(int request_id) {
 
   ReleaseResourcesInMessageQueue(&request_info->deferred_message_queue);
 
+  // Cancel loading.
+  it->second->url_loader = nullptr;
   // Clear URLLoaderClient to stop receiving further Mojo IPC from the browser
   // process.
   it->second->url_loader_client = nullptr;