Introducing a net::GenerateMimeMultipartBoundary helper.

chrome/browser/chromeos/policy/upload_job_unittest.cc

 // Copyright (c) 2015 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/browser/chromeos/policy/upload_job.h"
 
 #include <queue>
 #include <set>
 #include <utility>
 
@@ skipping 30 matching lines @@
 const char kTokenValid[] = "VALID_TOKEN";
 
 class RepeatingMimeBoundaryGenerator
     : public UploadJobImpl::MimeBoundaryGenerator {
  public:
   explicit RepeatingMimeBoundaryGenerator(char character)
       : character_(character) {}
   ~RepeatingMimeBoundaryGenerator() override {}
 
   // MimeBoundaryGenerator:
-  std::string GenerateBoundary(size_t length) const override {
-    return std::string(length, character_);
+  std::string GenerateBoundary() const override {
+    const int kMimeBoundarySize = 32;
+    return std::string(kMimeBoundarySize, character_);
   }
 
  private:
   const char character_;
 
   DISALLOW_COPY_AND_ASSIGN(RepeatingMimeBoundaryGenerator);
 };
 
 class MockOAuth2TokenService : public FakeOAuth2TokenService {
  public:
@@ skipping 270 matching lines @@
       "customfield2: CUSTOM2\r\n"
       "\r\n"
       "**||--||PAYLOAD2||--||**\r\n--"
       "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA--\r\n");
 
   upload_job->Start();
   run_loop_.Run();
 }
 
 }  // namespace policy