app_list: Show apps grid after installing from cws result.

ui/app_list/views/app_list_main_view.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/views/app_list_main_view.h"
 
 #include <algorithm>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
@@ skipping 208 matching lines @@
     delegate_->OpenSearchResult(result, event_flags);
 }
 
 void AppListMainView::InvokeResultAction(SearchResult* result,
                                          int action_index,
                                          int event_flags) {
   if (delegate_)
     delegate_->InvokeSearchResultAction(result, action_index, event_flags);
 }
 
+void AppListMainView::OnResultInstalled(SearchResult* result) {
+  // Clears the search to show the apps grid. The last installed app
+  // should be highlighted and made visible already.
+  search_box_view_->ClearSearch();
+}
+
 }  // namespace app_list