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

components/sync/engine_impl/worker_entity_tracker.cc

Index: components/sync/engine_impl/worker_entity_tracker.cc
diff --git a/components/sync/engine_impl/worker_entity_tracker.cc b/components/sync/engine_impl/worker_entity_tracker.cc
index 2e0ca7bfb65e0c6e293915302b4d1becbc147779..f8cf9e39613141127d182f929b69867b146b3e2a 100644
--- a/components/sync/engine_impl/worker_entity_tracker.cc
+++ b/components/sync/engine_impl/worker_entity_tracker.cc
@@ -7,6 +7,7 @@
 #include <algorithm>
 
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/base/time.h"
 #include "components/sync/syncable/syncable_util.h"
@@ -82,7 +83,7 @@ void WorkerEntityTracker::RequestCommit(const CommitRequestData& data) {
   DCHECK_EQ(client_tag_hash_, data.entity->client_tag_hash);
   // TODO(stanisc): consider simply copying CommitRequestData instead of
   // allocating one dynamically.
-  pending_commit_.reset(new CommitRequestData(data));
+  pending_commit_ = base::MakeUnique<CommitRequestData>(data);
 
   // Do our counter values indicate a conflict? If so, don't commit.
   //
@@ -150,7 +151,7 @@ bool WorkerEntityTracker::ReceiveEncryptedUpdate(
     return false;
 
   highest_gu_response_version_ = data.response_version;
-  encrypted_update_.reset(new UpdateResponseData(data));
+  encrypted_update_ = base::MakeUnique<UpdateResponseData>(data);
   ClearPendingCommit();
   return true;
 }