Re-write many calls to WrapUnique() with MakeUnique()

ash/sysui/sysui_application.cc

Index: ash/sysui/sysui_application.cc
diff --git a/ash/sysui/sysui_application.cc b/ash/sysui/sysui_application.cc
index cad93261e2417f781f3024d099fbf9fe2b986668..f71f8d334364af8f43dafbcaad777135e5b17644 100644
--- a/ash/sysui/sysui_application.cc
+++ b/ash/sysui/sysui_application.cc
@@ -238,7 +238,7 @@ class AshInit {
     AshWindowTreeHost::SetFactory(base::Bind(&CreateWindowTreeHostMus));
 
     std::unique_ptr<AppListPresenterMus> app_list_presenter =
-        base::WrapUnique(new AppListPresenterMus(connector));
+        base::MakeUnique<AppListPresenterMus>(connector);
     ash_delegate_ = new ShellDelegateMus(std::move(app_list_presenter));
 
     InitializeComponents();