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

chrome/service/cloud_print/cloud_print_helpers.cc

 // 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.
 
 #include "chrome/service/cloud_print/cloud_print_helpers.h"
 
 #include "base/json/json_reader.h"
 #include "base/md5.h"
 #include "base/rand_util.h"
 #include "base/scoped_ptr.h"
@@ skipping 213 matching lines @@
                                std::string(), post_data);
   }
   std::string tags_hash = MD5String(tags_list);
   std::string tags_hash_msg(kTagsHashTagName);
   tags_hash_msg += "=";
   tags_hash_msg += tags_hash;
   AddMultipartValueForUpload(kPrinterTagValue, tags_hash_msg, mime_boundary,
                              std::string(), post_data);
 }
 
+bool CloudPrintHelpers::IsDryRunJob(const std::vector<std::string>& tags) {
+  std::vector<std::string>::const_iterator it;
+  for (it = tags.begin(); it != tags.end(); ++it) {
+    if (*it == kTagDryRunFlag)
+      return true;
+  }
+  return false;
+}