Remove unused and obsolete Tab -currentRedirectedURLs method.

ios/web/navigation/crw_session_controller.h

 // Copyright 2012 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_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_
 #define IOS_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_
 
 #import <Foundation/Foundation.h>
 #include <vector>
 
@@ skipping 107 matching lines @@
 - (void)removeEntryAtIndex:(NSInteger)index;
 
 // Returns an array containing all of the non-redirected CRWSessionEntry objects
 // whose index in |entries_| is less than |currentNavigationIndex_|.
 - (NSArray*)backwardEntries;
 
 // Returns an array containing all of the non-redirected CRWSessionEntry objects
 // whose index in |entries_| is greater than |currentNavigationIndex_|.
 - (NSArray*)forwardEntries;
 
-// Returns the URLs in the entries that are redirected to the current entry.
-- (std::vector<GURL>)currentRedirectedUrls;
-
 // Determines whether a navigation between |firstEntry| and |secondEntry| is a
 // same-document navigation.  Entries can be passed in any order.
 - (BOOL)isSameDocumentNavigationBetweenEntry:(CRWSessionEntry*)firstEntry
                                     andEntry:(CRWSessionEntry*)secondEntry;
 
 // Find the most recent session entry that is not a redirect. Returns nil if
 // |entries_| is empty.
 - (CRWSessionEntry*)lastUserEntry;
 
 // Set |useDesktopUserAgentForNextPendingEntry_| to YES if there is no pending
 // entry, otherwise set |useDesktopUserAgent| in the pending entry.
 - (void)useDesktopUserAgentForNextPendingEntry;
 
 @end
 
 #endif  // IOS_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_