Add ability to get raw data and range requests to to PrivetURLFetcher

chrome/browser/local_discovery/privet_url_fetcher.h

 // Copyright 2013 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_BROWSER_LOCAL_DISCOVERY_PRIVET_URL_FETCHER_H_
 #define CHROME_BROWSER_LOCAL_DISCOVERY_PRIVET_URL_FETCHER_H_
 
 #include <string>
 
 #include "base/file_util.h"
@@ skipping 33 matching lines @@
 
     // If you do not implement this method, you will always get a
     // TOKEN_ERROR error when your token is invalid.
     virtual void OnNeedPrivetToken(
         PrivetURLFetcher* fetcher,
         const TokenCallback& callback);
     virtual void OnError(PrivetURLFetcher* fetcher, ErrorType error) = 0;
     virtual void OnParsedJson(PrivetURLFetcher* fetcher,
                               const base::DictionaryValue* value,
                               bool has_error) = 0;
+
+    // If this method is returns true, the data will not be parsed as JSON, and
+    // |OnParsedJson| will not be called. Otherwise, |OnParsedJson| will be
+    // called.
+    virtual bool OnRawData(PrivetURLFetcher* fetcher,
+                           bool response_is_file,
+                           const std::string& data_string,
+                           const base::FilePath& data_file);
   };
 
   PrivetURLFetcher(
       const std::string& token,
       const GURL& url,
       net::URLFetcher::RequestType request_type,
       net::URLRequestContextGetter* request_context,
       Delegate* delegate);
   virtual ~PrivetURLFetcher();
 
   void DoNotRetryOnTransientError();
 
   void AllowEmptyPrivetToken();
 
+  // Set the contents of the Range header. |OnRawData| must return true if this
+  // is called.
+  void SetByteRange(int start, int end);
+
+  // Save the response to a file. |OnRawData| must return true if this is
+  // called.
+  void SaveResponseToFile();
+
   void Start();
 
   void SetUploadData(const std::string& upload_content_type,
                      const std::string& upload_data);
 
   void SetUploadFilePath(const std::string& upload_content_type,
                          const base::FilePath& upload_file_path);
 
   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
+  void OnURLFetchCompleteParseData(const net::URLFetcher* source);
+  bool OnURLFetchCompleteDoNotParseData(const net::URLFetcher* source);
 
   const GURL& url() const { return url_fetcher_->GetOriginalURL(); }
   int response_code() const { return url_fetcher_->GetResponseCode(); }
 
  private:
   void Try();
   void ScheduleRetry(int timeout_seconds);
   bool PrivetErrorTransient(const std::string& error);
   void RequestTokenRefresh();
   void RefreshToken(const std::string& token);
 
   std::string privet_access_token_;
   GURL url_;
   net::URLFetcher::RequestType request_type_;
   scoped_refptr<net::URLRequestContextGetter> request_context_;
   Delegate* delegate_;
 
   bool do_not_retry_on_transient_error_;
   bool allow_empty_privet_token_;
+  bool has_byte_range_;
+  bool make_response_file_;
+
+  int byte_range_start_;
+  int byte_range_end_;
 
   int tries_;
   std::string upload_data_;
   std::string upload_content_type_;
   base::FilePath upload_file_path_;
   scoped_ptr<net::URLFetcher> url_fetcher_;
 
   base::WeakPtrFactory<PrivetURLFetcher> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(PrivetURLFetcher);
 };
@@ skipping 15 matching lines @@
  private:
   scoped_refptr<net::URLRequestContextGetter> request_context_;
   std::string token_;
 
   DISALLOW_COPY_AND_ASSIGN(PrivetURLFetcherFactory);
 };
 
 }  // namespace local_discovery
 
 #endif  // CHROME_BROWSER_LOCAL_DISCOVERY_PRIVET_URL_FETCHER_H_