Update SupportsUserData uses with unique_ptr.

content/browser/service_worker/service_worker_write_to_cache_job.cc

Index: content/browser/service_worker/service_worker_write_to_cache_job.cc
diff --git a/content/browser/service_worker/service_worker_write_to_cache_job.cc b/content/browser/service_worker/service_worker_write_to_cache_job.cc
index 42ac1ba0f053cc19384203355cbadca2da4d2d91..2824c580a6b1e069b78e08a677c3db0a0512509f 100644
--- a/content/browser/service_worker/service_worker_write_to_cache_job.cc
+++ b/content/browser/service_worker/service_worker_write_to_cache_job.cc
@@ -7,6 +7,7 @@
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
+#include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
@@ -199,7 +200,7 @@ void ServiceWorkerWriteToCacheJob::InitNetRequest(
   net_request_->set_initiator(request()->initiator());
   net_request_->SetReferrer(request()->referrer());
   net_request_->SetUserData(URLRequestServiceWorkerData::kUserDataKey,
-                            new URLRequestServiceWorkerData());
+                            base::MakeUnique<URLRequestServiceWorkerData>());
   if (extra_load_flags)
     net_request_->SetLoadFlags(net_request_->load_flags() | extra_load_flags);