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// Copyright 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 CHROME_BROWSER_UI_SEARCH_INSTANT_OVERLAY_MODEL_OBSERVER_H_
#define CHROME_BROWSER_UI_SEARCH_INSTANT_OVERLAY_MODEL_OBSERVER_H_
class InstantOverlayModel;
// This class defines the observer interface for the InstantOverlayModel.
class InstantOverlayModelObserver {
public:
// Informs the observer that the overlay state has changed. This can mean
// either the model state changed or the contents of the overlay changed.
virtual void OverlayStateChanged(const InstantOverlayModel& model) = 0;
protected:
~InstantOverlayModelObserver() {}
};
#endif // CHROME_BROWSER_UI_SEARCH_INSTANT_OVERLAY_MODEL_OBSERVER_H_
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