[Sync] Rewriting ".reset(new" pattern to use "= base::MakeUnique" instead.

components/sync/driver/glue/sync_backend_registrar.cc

Index: components/sync/driver/glue/sync_backend_registrar.cc
diff --git a/components/sync/driver/glue/sync_backend_registrar.cc b/components/sync/driver/glue/sync_backend_registrar.cc
index 7a9fdebc5de4fe68dd7233e268b459b65ed86758..464261f4c15edf1d68412f36dde58ccc00cf6f38 100644
--- a/components/sync/driver/glue/sync_backend_registrar.cc
+++ b/components/sync/driver/glue/sync_backend_registrar.cc
@@ -9,6 +9,7 @@
 #include <utility>
 
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "components/sync/driver/change_processor.h"
 #include "components/sync/driver/sync_client.h"
@@ -33,7 +34,7 @@ SyncBackendRegistrar::SyncBackendRegistrar(
 
   sync_thread_ = std::move(sync_thread);
   if (!sync_thread_) {
-    sync_thread_.reset(new base::Thread("Chrome_SyncThread"));
+    sync_thread_ = base::MakeUnique<base::Thread>("Chrome_SyncThread");
     base::Thread::Options options;
     options.timer_slack = base::TIMER_SLACK_MAXIMUM;
     CHECK(sync_thread_->StartWithOptions(options));