Replace scoped_ptr with std::unique_ptr in //ui

ui/app_list/search/history_data.cc

Index: ui/app_list/search/history_data.cc
diff --git a/ui/app_list/search/history_data.cc b/ui/app_list/search/history_data.cc
index 0183cc0d5f295d945a93e52ffa77f2f458022ddf..388415cfcd85cea40e6700e01c8f40b9d0216451 100644
--- a/ui/app_list/search/history_data.cc
+++ b/ui/app_list/search/history_data.cc
@@ -97,9 +97,9 @@ void HistoryData::Add(const std::string& query, const std::string& result_id) {
   store_->SetSecondary(query, secondary);
 }
 
-scoped_ptr<KnownResults> HistoryData::GetKnownResults(
+std::unique_ptr<KnownResults> HistoryData::GetKnownResults(
     const std::string& query) const {
-  scoped_ptr<KnownResults> results(new KnownResults);
+  std::unique_ptr<KnownResults> results(new KnownResults);
   for (Associations::const_iterator assoc_it = associations_.lower_bound(query);
        assoc_it != associations_.end();
        ++assoc_it) {
@@ -141,7 +141,7 @@ void HistoryData::RemoveObserver(HistoryDataObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
-void HistoryData::OnStoreLoaded(scoped_ptr<Associations> loaded_data) {
+void HistoryData::OnStoreLoaded(std::unique_ptr<Associations> loaded_data) {
   if (loaded_data)
     loaded_data->swap(associations_);