Upstream Chrome on iOS source code [7/11].

ios/chrome/browser/ui/reading_list/reading_list_menu_notifier.h

Index: ios/chrome/browser/ui/reading_list/reading_list_menu_notifier.h
diff --git a/ios/chrome/browser/ui/reading_list/reading_list_menu_notifier.h b/ios/chrome/browser/ui/reading_list/reading_list_menu_notifier.h
new file mode 100644
index 0000000000000000000000000000000000000000..b4630f5df5dde4eebde80c7885775d9188d79e76
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+++ b/ios/chrome/browser/ui/reading_list/reading_list_menu_notifier.h
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+// 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_READING_LIST_READING_LIST_MENU_NOTIFIER_H_
+#define IOS_CHROME_BROWSER_UI_READING_LIST_READING_LIST_MENU_NOTIFIER_H_
+
+#import <Foundation/Foundation.h>
+
+class ReadingListModel;
+@protocol ReadingListMenuNotificationDelegate;
+
+// Notifies its delegate of changes in the reading list that have an impact on
+// the menu. Can also be queried for current values of the model.
+@interface ReadingListMenuNotifier : NSObject
+
+// Delegate for handling of changes in the reading list model.
+@property(nonatomic, weak) id<ReadingListMenuNotificationDelegate> delegate;
+
+- (instancetype)initWithReadingList:(ReadingListModel*)readingListModel;
+
+// The number of unread items in the reading list.
+- (NSInteger)readingListUnreadCount;
+
+// Whether the reading list has unseen items.
+- (BOOL)readingListUnseenItemsExist;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_READING_LIST_READING_LIST_MENU_NOTIFIER_H_