Use std::unique_ptr for base::DictionaryValue and base::ListValue's internal store.

chrome/service/cloud_print/printer_job_queue_handler.cc

 // Copyright (c) 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.
 
 #include "chrome/service/cloud_print/printer_job_queue_handler.h"
 
 #include <math.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 100 matching lines @@
 
 std::vector<JobDetails> PrinterJobQueueHandler::GetJobsFromQueue(
     const base::DictionaryValue& json_data) {
   std::vector<JobDetails> jobs;
 
   const base::ListValue* job_list = nullptr;
   if (!json_data.GetList(kJobListValue, &job_list))
     return jobs;
 
   std::vector<JobDetails> jobs_with_timeouts;
-  for (const auto* job_value : *job_list) {
+  for (const auto& job_value : *job_list) {
     const base::DictionaryValue* job_data = nullptr;
     if (!job_value->GetAsDictionary(&job_data))
       continue;
 
     JobDetails job_details_current = ConstructJobDetailsFromJson(*job_data);
     job_details_current.time_remaining_ =
         ComputeBackoffTime(job_details_current.job_id_);
     if (job_details_current.time_remaining_.is_zero()) {
       jobs.push_back(job_details_current);
     } else {
@@ skipping 29 matching lines @@
     }
 
     job_found.first->second.retries_ += 1;
     job_found.first->second.last_retry_ = time_provider_->GetNow();
   }
 
   return true;
 }
 
 }  // namespace cloud_print