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

chrome/browser/ui/app_list/search/search_webstore_result.cc

Index: chrome/browser/ui/app_list/search/search_webstore_result.cc
diff --git a/chrome/browser/ui/app_list/search/search_webstore_result.cc b/chrome/browser/ui/app_list/search/search_webstore_result.cc
index 477bc2011788a4931958323167d78e1f03499eae..80169525c42f5b80ed5576b0159c66d35c54b7b7 100644
--- a/chrome/browser/ui/app_list/search/search_webstore_result.cc
+++ b/chrome/browser/ui/app_list/search/search_webstore_result.cc
@@ -58,8 +58,8 @@ void SearchWebstoreResult::Open(int event_flags) {
                        ui::DispositionFromEventFlags(event_flags));
 }
 
-scoped_ptr<SearchResult> SearchWebstoreResult::Duplicate() const {
-  return scoped_ptr<SearchResult>(
+std::unique_ptr<SearchResult> SearchWebstoreResult::Duplicate() const {
+  return std::unique_ptr<SearchResult>(
       new SearchWebstoreResult(profile_, controller_, query_));
 }