Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/search_engines/search_engine_tab_helper.cc

Index: chrome/browser/ui/search_engines/search_engine_tab_helper.cc
diff --git a/chrome/browser/ui/search_engines/search_engine_tab_helper.cc b/chrome/browser/ui/search_engines/search_engine_tab_helper.cc
index bf1864b455cb33c1adcfdff81156f64936ad7ec9..619c8f03797d86b68db720c56d40be28d1014ad1 100644
--- a/chrome/browser/ui/search_engines/search_engine_tab_helper.cc
+++ b/chrome/browser/ui/search_engines/search_engine_tab_helper.cc
@@ -177,7 +177,7 @@ void SearchEngineTabHelper::OnPageHasOSDD(
 }
 
 void SearchEngineTabHelper::OnDownloadedOSDD(
-    scoped_ptr<TemplateURL> template_url) {
+    std::unique_ptr<TemplateURL> template_url) {
   Profile* profile =
       Profile::FromBrowserContext(web_contents()->GetBrowserContext());
   delegate_->ConfirmAddSearchProvider(template_url.release(), profile);