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

ui/app_list/search_result_view_delegate.h

+// 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.
+
+#ifndef UI_APP_LIST_SEARCH_RESULT_VIEW_DELEGATE_H_
+#define UI_APP_LIST_SEARCH_RESULT_VIEW_DELEGATE_H_
+
+namespace ui {
+class Event;
+}
+
+namespace app_list {
+
+class SearchResultView;
+
+class SearchResultViewDelegate {
+ public:
+  // Called when the search result is activated.
+  virtual void SearchResultActivated(SearchResultView* view,
+                                     const ui::Event& event) = 0;
+
+  // Called when one of the search result's optional action icons is activated.
+  // |action_index| contains the 0-based index of the action.
+  virtual void SearchResultActionActivated(SearchResultView* view,
+                                           int action_index,
+                                           const ui::Event& event) = 0;
+
+ protected:
+  virtual ~SearchResultViewDelegate() {}
+};
+
+}  // namespace ash
+
+#endif  // UI_APP_LIST_SEARCH_RESULT_VIEW_DELEGATE_H_