chromium/components/zoom/zoom_event_manager.h

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_ZOOM_ZOOM_EVENT_MANAGER_H_
#define COMPONENTS_ZOOM_ZOOM_EVENT_MANAGER_H_

#include "base/callback_list.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/supports_user_data.h"
#include "content/public/browser/host_zoom_map.h"

namespace content {
class BrowserContext;
}  // namespace content

namespace zoom {

class ZoomEventManagerObserver;

// This class serves as a target for event notifications from all ZoomController
// objects. Classes that need to know about browser-specific zoom events (e.g.
// manual-mode zoom) should subscribe here.
class ZoomEventManager : public base::SupportsUserData::Data { … };

}  // namespace zoom

#endif  // COMPONENTS_ZOOM_ZOOM_EVENT_MANAGER_H_