Introducing a net::GenerateMimeMultipartBoundary helper.

chrome/common/cloud_print/cloud_print_helpers.cc

 // Copyright (c) 2012 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/common/cloud_print/cloud_print_helpers.h"
 
 #include <stdint.h>
 
 #include <limits>
 
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/md5.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/sys_info.h"
 #include "base/values.h"
 #include "chrome/common/channel_info.h"
 #include "chrome/common/cloud_print/cloud_print_constants.h"
 #include "net/base/mime_util.h"
 #include "url/gurl.h"
 
 namespace cloud_print {
 
@@ skipping 174 matching lines @@
   if (succeeded &&
       !response_dict->GetBoolean(kSuccessValue, succeeded))
     *succeeded = false;
   return response_dict;
 }
 
 std::string GetMultipartMimeType(const std::string& mime_boundary) {
   return std::string("multipart/form-data; boundary=") + mime_boundary;
 }
 
-// Create a MIME boundary marker (27 '-' characters followed by 16 hex digits).
-void CreateMimeBoundaryForUpload(std::string* out) {
-  int r1 = base::RandInt(0, std::numeric_limits<int32_t>::max());
-  int r2 = base::RandInt(0, std::numeric_limits<int32_t>::max());
-  base::SStringPrintf(out, "---------------------------%08X%08X", r1, r2);
-}
-
 std::string GetHashOfPrinterTags(const PrinterTags& printer_tags) {
   return HashPrinterTags(PreparePrinterTags(printer_tags));
 }
 
 std::string GetPostDataForPrinterTags(
     const PrinterTags& printer_tags,
     const std::string& mime_boundary,
     const std::string& proxy_tag_prefix,
     const std::string& tags_hash_tag_name) {
   PrinterTags printer_tags_prepared = PreparePrinterTags(printer_tags);
@@ skipping 18 matching lines @@
   net::AddMultipartValueForUpload(kPrinterTagValue, tags_hash_msg,
       mime_boundary, std::string(), &post_data);
   return post_data;
 }
 
 std::string GetCloudPrintAuthHeader(const std::string& auth_token) {
   return base::StringPrintf("Authorization: OAuth %s", auth_token.c_str());
 }
 
 }  // namespace cloud_print