Allow app list tiles to show search results in the experimental app list.

ui/app_list/search_result_observer.h

Index: ui/app_list/search_result_observer.h
diff --git a/ui/app_list/search_result_observer.h b/ui/app_list/search_result_observer.h
index bef7564d45ad00352a3d5ad64fb496ec28b433d5..d35673c9ba3e5c48768a0d7da6321134f23d7b4e 100644
--- a/ui/app_list/search_result_observer.h
+++ b/ui/app_list/search_result_observer.h
@@ -12,22 +12,24 @@ namespace app_list {
 class APP_LIST_EXPORT SearchResultObserver {
  public:
   // Invoked when the SearchResult's icon has changed.
-  virtual void OnIconChanged() = 0;
+  virtual void OnIconChanged() {}

[Matt Giuca, 2014/08/06 08:54:53]

Hooray! Death to = 0 on observers.

[calamity, 2014/08/12 05:03:36]

Acknowledged.

 
   // Invoked when the SearchResult's actions have changed.
-  virtual void OnActionsChanged() = 0;
+  virtual void OnActionsChanged() {}
 
   // Invoked when the SearchResult's is_installing flag has changed.
-  virtual void OnIsInstallingChanged() = 0;
+  virtual void OnIsInstallingChanged() {}
 
   // Invoked when the download percentage has changed.
-  virtual void OnPercentDownloadedChanged() = 0;
+  virtual void OnPercentDownloadedChanged() {}
 
   // Invoked when the item represented by the SearchResult is installed.
-  virtual void OnItemInstalled() = 0;
+  virtual void OnItemInstalled() {}
 
   // Invoked when the item represented by the SearchResult is uninstalled.
-  virtual void OnItemUninstalled() = 0;
+  virtual void OnItemUninstalled() {}
+
+  virtual void OnResultDestroying() {}

[Matt Giuca, 2014/08/06 08:54:53]

// Invoked when ...

[calamity, 2014/08/12 05:03:37]

Done.

 
  protected:
   virtual ~SearchResultObserver() {}