Mandate unique_ptr for base::IDMap in IDMapOwnPointer mode.

components/drive/job_scheduler.cc

Index: components/drive/job_scheduler.cc
diff --git a/components/drive/job_scheduler.cc b/components/drive/job_scheduler.cc
index a6568d9aa934ce348aaeeae7842a4839eb11e9a4..e7fb5b6c7a8f222b4103095f96889d90c97c1846 100644
--- a/components/drive/job_scheduler.cc
+++ b/components/drive/job_scheduler.cc
@@ -721,9 +721,11 @@ void JobScheduler::AddPermission(
 }
 
 JobScheduler::JobEntry* JobScheduler::CreateNewJob(JobType type) {
-  JobEntry* job = new JobEntry(type);
-  job->job_info.job_id = job_map_.Add(job);  // Takes the ownership of |job|.
-  return job;
+  auto job = base::MakeUnique<JobEntry>(type);
+  JobEntry* job_raw = job.get();
+  int32_t job_key = job_map_.Add(std::move(job));
+  job_raw->job_info.job_id = job_key;
+  return job_raw;
 }
 
 void JobScheduler::StartJob(JobEntry* job) {