Send privet auth token in PrivetV3 mode instead of X-Privet token

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 24 matching lines @@
     RETRY_ERROR,
     TOKEN_ERROR
   };
 
   typedef base::Callback<void(const std::string& /*token*/)> TokenCallback;
 
   class Delegate {
    public:
     virtual ~Delegate() {}
 
-    // If you do not implement this method, you will always get a
-    // TOKEN_ERROR error when your token is invalid.
+    // If you do not implement this method for PrivetV1 callers, you will always
+    // get a TOKEN_ERROR error when your token is invalid.
     virtual void OnNeedPrivetToken(
         PrivetURLFetcher* fetcher,
         const TokenCallback& callback);
+
+    // If this returns the empty string, will not send an auth token.
+    virtual std::string GetAuthToken();
+
     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,
@@ skipping 14 matching lines @@
 
   static void SetTokenForHost(const std::string& host,
                               const std::string& token);
 
   static void ResetTokenMapForTests();
 
   void DoNotRetryOnTransientError();
 
   void SendEmptyPrivetToken();
 
+  void V3Mode();
+
   // 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();
 
@@ skipping 20 matching lines @@
 
   GURL url_;
   net::URLFetcher::RequestType request_type_;
   scoped_refptr<net::URLRequestContextGetter> request_context_;
   Delegate* delegate_;
 
   bool do_not_retry_on_transient_error_;
   bool send_empty_privet_token_;
   bool has_byte_range_;
   bool make_response_file_;
+  bool v3_mode_;
 
   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);
 };
 
 }  // namespace local_discovery
 
 #endif  // CHROME_BROWSER_LOCAL_DISCOVERY_PRIVET_URL_FETCHER_H_