Added 'dry run' tag to the print job, to test proxy health without wasting pa...

chrome/service/cloud_print/cloud_print_helpers.h

 // Copyright (c) 2010 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_HELPERS_H_
 #define CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_HELPERS_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 39 matching lines @@
 // Create a MIME boundary marker (27 '-' characters followed by 16 hex digits).
   static void CreateMimeBoundaryForUpload(std::string *out);
   // Generates an MD5 hash of the contents of a string map.
   static std::string GenerateHashOfStringMap(
       const std::map<std::string, std::string>& string_map);
   static void GenerateMultipartPostDataForPrinterTags(
       const std::map<std::string, std::string>& printer_tags,
       const std::string& mime_boundary,
       std::string* post_data);
 
+  // Returns true is tags indicate a dry run (test) job.
+  static bool IsDryRunJob(const std::vector<std::string>& tags);
  private:
   CloudPrintHelpers() {
   }
 };
 
 #endif  // CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_HELPERS_H_