NetworkService: Destroy URLLoaders when a NetworkContext is destroyed.

content/browser/loader/test_url_loader_client.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_
 #define CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_
 
 #include <stdint.h>
 #include <vector>
 
@@ skipping 73 matching lines @@
   mojom::URLLoaderClientPtr CreateInterfacePtr();
 
   void Unbind();
 
   void RunUntilResponseReceived();
   void RunUntilRedirectReceived();
   void RunUntilDataDownloaded();
   void RunUntilCachedMetadataReceived();
   void RunUntilResponseBodyArrived();
   void RunUntilComplete();
+  void RunUntilConnectionError();
 
  private:
+  void OnConnectionError();
+
   mojo::Binding<mojom::URLLoaderClient> binding_;
   ResourceResponseHead response_head_;
   base::Optional<net::SSLInfo> ssl_info_;
   net::RedirectInfo redirect_info_;
   std::string cached_metadata_;
   mojo::ScopedDataPipeConsumerHandle response_body_;
   ResourceRequestCompletionStatus completion_status_;
   bool has_received_response_ = false;
   bool has_received_redirect_ = false;
   bool has_data_downloaded_ = false;
   bool has_received_upload_progress_ = false;
   bool has_received_cached_metadata_ = false;
   bool has_received_completion_ = false;
+  bool has_received_connection_error_ = false;
+
   base::Closure quit_closure_for_on_receive_response_;
   base::Closure quit_closure_for_on_receive_redirect_;
   base::Closure quit_closure_for_on_data_downloaded_;
   base::Closure quit_closure_for_on_receive_cached_metadata_;
   base::Closure quit_closure_for_on_start_loading_response_body_;
   base::Closure quit_closure_for_on_complete_;
+  base::Closure quit_closure_for_on_connection_error_;
+
   mojom::URLLoaderFactoryPtr url_loader_factory_;
   int64_t download_data_length_ = 0;
   int64_t encoded_download_data_length_ = 0;
   int64_t body_transfer_size_ = 0;
   int64_t current_upload_position_ = 0;
   int64_t total_upload_size_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(TestURLLoaderClient);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_