ash: Add support for additional icons in apps search list.

ash/shell/app_list.cc

 // Copyright (c) 2012 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 <string>
 
 #include "ash/shell.h"
 #include "ash/shell/example_factory.h"
 #include "ash/shell/toplevel_window.h"
 #include "ash/shell_delegate.h"
@@ skipping 222 matching lines @@
     static_cast<WindowTypeLauncherItem*>(item)->Activate(event_flags);
   }
 
   virtual void OpenSearchResult(const app_list::SearchResult& result,
                                 int event_flags) OVERRIDE {
     const ExampleSearchResult* example_result =
         static_cast<const ExampleSearchResult*>(&result);
     WindowTypeLauncherItem::Activate(example_result->type(), event_flags);
   }
 
+  virtual void InvokeSearchResultAction(const app_list::SearchResult& result,
+                                        int action_index,
+                                        int event_flags) OVERRIDE {
+    NOTIMPLEMENTED();
+  }
+
   virtual void StartSearch() OVERRIDE {
     string16 query;
     TrimWhitespace(model_->search_box()->text(), TRIM_ALL, &query);
     query = base::i18n::ToLower(query);
 
     model_->results()->DeleteAll();
     if (query.empty())
       return;
 
     for (int i = 0;
@@ skipping 24 matching lines @@
 };
 
 }  // namespace
 
 app_list::AppListViewDelegate* CreateAppListViewDelegate() {
   return new ExampleAppListViewDelegate;
 }
 
 }  // namespace shell
 }  // namespace ash