Get maximum age of clipboard from clipboard_recent_contents.cc in iOS impl

components/open_from_clipboard/clipboard_recent_content_impl_ios.h

 // Copyright 2017 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 COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_IMPL_IOS_H_
 #define COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_IMPL_IOS_H_
 
 #import <Foundation/Foundation.h>
 
 // A protocol implemented by delegates to handle clipboard changes.
 @protocol ClipboardRecentContentDelegate<NSObject>
 
 - (void)onClipboardChanged;
 
 @end
 
 // Helper class returning a URL if the content of the clipboard can be turned
 // into a URL, and if it estimates that the content of the clipboard is not too
 // old.
 @interface ClipboardRecentContentImplIOS : NSObject
 
 // |delegate| is used for metrics logging and can be nil. |authorizedSchemes|
 // should contain all schemes considered valid. |groupUserDefaults| is the
 // NSUserDefaults used to store information on pasteboard entry expiration. This
 // information will be shared with other applications in the application group.
-- (instancetype)initWithAuthorizedSchemes:(NSSet<NSString*>*)authorizedSchemes
-                             userDefaults:(NSUserDefaults*)groupUserDefaults
-                                 delegate:(id<ClipboardRecentContentDelegate>)
-                                              delegate
+- (instancetype)initWithMaxAge:(NSTimeInterval)maxAge
+             authorizedSchemes:(NSSet<NSString*>*)authorizedSchemes
+                  userDefaults:(NSUserDefaults*)groupUserDefaults
+                      delegate:(id<ClipboardRecentContentDelegate>)delegate
     NS_DESIGNATED_INITIALIZER;
 
 - (instancetype)init NS_UNAVAILABLE;
 
 // Returns the copied URL if the clipboard contains a recent URL that has not
 // been supressed. Otherwise, returns nil.
 - (NSURL*)recentURLFromClipboard;
 
 // Returns how old the content of the clipboard is.
 - (NSTimeInterval)clipboardContentAge;
 
 // Prevents GetRecentURLFromClipboard from returning anything until the
 // clipboard's content changes.
 - (void)suppressClipboardContent;
 
 // Methods below are exposed for testing purposes.
 
 // Estimation of the date when the pasteboard changed.
 @property(nonatomic, strong) NSDate* lastPasteboardChangeDate;
 
 // Saves information to the user defaults about the latest pasteboard entry.
 - (void)saveToUserDefaults;
 
 @end
 
 #endif  // COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_IMPL_IOS_H_