Chrome proxy refactoring.

chrome/service/cloud_print/cloud_print_url_fetcher.h

 // Copyright (c) 2011 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 CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_URL_FETCHER_H_
 #define CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_URL_FETCHER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 20 matching lines @@
 // must also be retried.
 class CloudPrintURLFetcher
     : public base::RefCountedThreadSafe<CloudPrintURLFetcher>,
       public content::URLFetcherDelegate {
  public:
   enum ResponseAction {
     CONTINUE_PROCESSING,
     STOP_PROCESSING,
     RETRY_REQUEST,
   };
+
   class Delegate {
    public:
     virtual ~Delegate() { }
     // Override this to handle the raw response as it is available. No response
     // error checking is done before this method is called. If the delegate
     // returns CONTINUE_PROCESSING, we will then check for network
     // errors. Most implementations will not override this.
     virtual ResponseAction HandleRawResponse(
         const content::URLFetcher* source,
         const GURL& url,
@@ skipping 22 matching lines @@
                                           const GURL& url,
                                           base::DictionaryValue* json_data,
                                           bool succeeded) {
       return CONTINUE_PROCESSING;
     }
     // Invoked when the retry limit for this request has been reached (if there
     // was a retry limit - a limit of -1 implies no limit).
     virtual void OnRequestGiveUp() { }
     // Invoked when the request returns a 403 error (applicable only when
     // HandleRawResponse returns CONTINUE_PROCESSING).
-    virtual void OnRequestAuthError() = 0;
+    // Returning RETRY_REQUEST will retry current request. (auth information
+    // may have been updated and new info is available through the
+    // Authenticator interface).
+    // Returning CONTINUE_PROCESSING will treat auth error as a netwrok error.

[Scott Byer, 2011/10/27 22:22:50]

nit: spelling

+    virtual ResponseAction OnRequestAuthError() = 0;
+
+    // Authentication information may change between retries.
+    // CloudPrintURLFetcher will request auth info before sending any request.
+    virtual std::string GetAuthHeader() = 0;
   };
   CloudPrintURLFetcher();
 
+  bool IsSameRequest(const content::URLFetcher* source);
+
   void StartGetRequest(const GURL& url,
                        Delegate* delegate,
                        int max_retries,
                        const std::string& additional_headers);
   void StartPostRequest(const GURL& url,
                         Delegate* delegate,
                         int max_retries,
                         const std::string& post_data_mime_type,
                         const std::string& post_data,
                         const std::string& additional_headers);
@@ skipping 23 matching lines @@
   int num_retries_;
   URLFetcher::RequestType request_type_;
   std::string additional_headers_;
   std::string post_data_mime_type_;
   std::string post_data_;
 };
 
 typedef CloudPrintURLFetcher::Delegate CloudPrintURLFetcherDelegate;
 
 #endif  // CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_URL_FETCHER_H_