Remove use of stl_util in search_engines.

components/omnibox/browser/history_url_provider_unittest.cc

Index: components/omnibox/browser/history_url_provider_unittest.cc
diff --git a/components/omnibox/browser/history_url_provider_unittest.cc b/components/omnibox/browser/history_url_provider_unittest.cc
index 798b8417346e3d8b2bcde33ec5eacaea644f3b8e..2ba1e96962969d5e452564240326f01cb821395e 100644
--- a/components/omnibox/browser/history_url_provider_unittest.cc
+++ b/components/omnibox/browser/history_url_provider_unittest.cc
@@ -907,8 +907,8 @@ TEST_F(HistoryURLProviderTest, CullSearchResults) {
   data.SetKeyword(ASCIIToUTF16("TestEngine"));
   data.SetURL("http://testsearch.com/?q={searchTerms}");
   TemplateURLService* template_url_service = client_->GetTemplateURLService();
-  TemplateURL* template_url = new TemplateURL(data);
-  template_url_service->Add(template_url);
+  TemplateURL* template_url =
+      template_url_service->Add(base::MakeUnique<TemplateURL>(data));
   template_url_service->SetUserSelectedDefaultSearchProvider(template_url);
   template_url_service->Load();