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

components/browser_sync/profile_sync_service_startup_unittest.cc

Index: components/browser_sync/profile_sync_service_startup_unittest.cc
diff --git a/components/browser_sync/profile_sync_service_startup_unittest.cc b/components/browser_sync/profile_sync_service_startup_unittest.cc
index f0ef72e01337cc2617ce8786c8e4af0eef7e605d..45cbaa37032e069cac98da4ba6f348d2cbcfd149 100644
--- a/components/browser_sync/profile_sync_service_startup_unittest.cc
+++ b/components/browser_sync/profile_sync_service_startup_unittest.cc
@@ -5,6 +5,7 @@
 #include "components/browser_sync/profile_sync_service.h"
 
 #include "base/files/file_util.h"
+#include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/browser_sync/profile_sync_test_util.h"
@@ -90,7 +91,8 @@ class ProfileSyncServiceStartupTest : public testing::Test {
         profile_sync_service_bundle_.CreateBasicInitParams(start_behavior,
                                                            builder.Build());
 
-    sync_service_.reset(new ProfileSyncService(std::move(init_params)));
+    sync_service_ =
+        base::MakeUnique<ProfileSyncService>(std::move(init_params));
     sync_service_->RegisterDataTypeController(
         base::MakeUnique<syncer::FakeDataTypeController>(syncer::BOOKMARKS));
     sync_service_->AddObserver(&observer_);