| // Copyright 2015 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 COMPONENTS_UI_ZOOM_ZOOM_EVENT_MANAGER_OBSERVER_H_ |
| #define COMPONENTS_UI_ZOOM_ZOOM_EVENT_MANAGER_OBSERVER_H_ |
| |
| namespace ui_zoom { |
| |
| class ZoomEventManagerObserver { |
| public: |
| // TODO(wjmaclean): convert existing ZoomLevelChangedCallbacks to be |
| // observers. |
| virtual void OnZoomLevelChanged() {} |
| virtual void OnDefaultZoomLevelChanged() {} |
| |
| protected: |
| virtual ~ZoomEventManagerObserver() {} |
| }; |
| |
| } // namespace ui_zoom |
| |
| #endif // COMPONENTS_UI_ZOOM_ZOOM_EVENT_MANAGER_OBSERVER_H_ |
