Make app list search result mixer more resilient to reordering.

chrome/browser/ui/app_list/search/mixer.h

Index: chrome/browser/ui/app_list/search/mixer.h
diff --git a/chrome/browser/ui/app_list/search/mixer.h b/chrome/browser/ui/app_list/search/mixer.h
index b7e16415f45c6856b5a9ef028f6ef786e72d4c3e..c555145fc79f2a5ac2c45f7b88ea86a4b8ee7ebb 100644
--- a/chrome/browser/ui/app_list/search/mixer.h
+++ b/chrome/browser/ui/app_list/search/mixer.h
@@ -67,8 +67,9 @@ class Mixer {
   class Group;
   typedef ScopedVector<Group> Groups;
 
-  // Publishes the given |results| to |ui_results|. Reuse existing ones to avoid
-  // flickering.
+  // Publishes the given |new_results| to |ui_results|, deleting any existing
+  // results that are not in |new_results|. Results that already exist in
+  // |ui_results| are reused to avoid flickering caused by icon reload.
   static void Publish(const SortedResults& results,
                       AppListModel::SearchResults* ui_results);