Fix apps sometimes not showing up in the app list search results.

ui/app_list/search/mixer.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/app_list/search/mixer.h"
 
 #include <algorithm>
 #include <map>
 #include <set>
 #include <string>
@@ skipping 10 matching lines @@
 const size_t kMaxResults = 6;
 const size_t kMaxMainGroupResults = 4;
 const size_t kMaxWebstoreResults = 2;
 const size_t kMaxPeopleResults = 2;
 const size_t kMaxSuggestionsResults = 6;
 
 // A value to indicate no max number of results limit.
 const size_t kNoMaxResultsLimit = 0;
 
 void UpdateResult(const SearchResult& source, SearchResult* target) {
+  target->set_display_type(source.display_type());
   target->set_title(source.title());
   target->set_title_tags(source.title_tags());
   target->set_details(source.details());
   target->set_details_tags(source.details_tags());
 }
 
 }  // namespace
 
 Mixer::SortData::SortData() : result(NULL), score(0.0) {
 }
@@ skipping 211 matching lines @@
   results->swap(final);
 }
 
 void Mixer::FetchResults(bool is_voice_query,
                          const KnownResults& known_results) {
   for (const auto& item : groups_)
     item.second->FetchResults(is_voice_query, known_results);
 }
 
 }  // namespace app_list