text: // Copyright 2020 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 WEBLAYER_PUBLIC_FAVICON_FETCHER_DELEGATE_H_
  #define WEBLAYER_PUBLIC_FAVICON_FETCHER_DELEGATE_H_
  
  #include "base/observer_list_types.h"
  
  namespace gfx {
  class Image;
  }
  
  namespace weblayer {
  
  // Notified of interesting events related to FaviconFetcher.
  class FaviconFetcherDelegate : public base::CheckedObserver {
   public:
    // Called when the favicon of the current navigation has changed. This may be
    // called multiple times for the same navigation.
    virtual void OnFaviconChanged(const gfx::Image& image) = 0;
  
   protected:
    ~FaviconFetcherDelegate() override = default;
  };
  
  }  // namespace weblayer
  
  #endif  // WEBLAYER_PUBLIC_FAVICON_FETCHER_DELEGATE_H_
  