Upstream Chrome on iOS source code [8/11].

ios/chrome/browser/ui/settings/utils/resized_avatar_cache.h

+// Copyright 2016 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 IOS_CHROME_BROWSER_UI_SETTINGS_UTILS_RESIZED_AVATAR_CACHE_H_
+#define IOS_CHROME_BROWSER_UI_SETTINGS_UTILS_RESIZED_AVATAR_CACHE_H_
+
+#import <Foundation/Foundation.h>
+
+@class ChromeIdentity;
+@class UIImage;
+
+// This class manages an image cache for resized avatar images.
+@interface ResizedAvatarCache : NSObject
+// Returns cached resized image, if it exists. If the identity avatar has not
+// yet been fetched, this method triggers a fetch and returns the default
+// avatar image. The user of this class should be an observer of identity
+// updates. When notified of identity updates, this method should be called
+// again to obtain an updated resized image.
+- (UIImage*)resizedAvatarForIdentity:(ChromeIdentity*)identity;
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_SETTINGS_UTILS_RESIZED_AVATAR_CACHE_H_