1 // Copyright 2017 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef IOS_CHROME_BROWSER_SNAPSHOTS_SNAPSHOT_CACHE_OBSERVER_H_ 6 #define IOS_CHROME_BROWSER_SNAPSHOTS_SNAPSHOT_CACHE_OBSERVER_H_ 7 8 #import <Foundation/Foundation.h> 9 10 @class SnapshotCache; 11 12 // Interface for listening to events occurring to the SnapshotCache. 13 @protocol SnapshotCacheObserver 14 @optional 15 // Tells the observing object that the |snapshotCache| was updated with a new 16 // snapshot corresponding to |identifier|. 17 - (void)snapshotCache:(SnapshotCache*)snapshotCache 18 didUpdateSnapshotForIdentifier:(NSString*)identifier; 19 @end 20 21 #endif // IOS_CHROME_BROWSER_SNAPSHOTS_SNAPSHOT_CACHE_OBSERVER_H_ 22