Remove unused and obsolete Tab -currentRedirectedURLs method.

ios/chrome/browser/tabs/tab.mm

 // 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.
 
 #import "ios/chrome/browser/tabs/tab.h"
 
 #import <CoreLocation/CoreLocation.h>
 #import <UIKit/UIKit.h>
 
 #include <utility>
@@ skipping 1563 matching lines @@
 
   [self.readerModeController exitReaderMode];
 }
 
 #pragma mark -
 
 - (void)openAppStore:(NSString*)appId {
   [storeKitLauncher_ openAppStore:appId];
 }
 
-- (std::vector<GURL>)currentRedirectedUrls {
-  DCHECK([self navigationManager]);
-  return
-      [[self navigationManager]->GetSessionController() currentRedirectedUrls];
-}
-
 - (BOOL)useDesktopUserAgent {
   web::NavigationItem* currentItem = self.currentSessionEntry.navigationItem;
   return currentItem && currentItem->IsOverridingUserAgent();
 }
 
 - (void)enableDesktopUserAgent {
   DCHECK_EQ(self.useDesktopUserAgent, NO);
   DCHECK([self navigationManager]);
   [[self navigationManager]->GetSessionController()
           useDesktopUserAgentForNextPendingEntry];
@@ skipping 775 matching lines @@
 
 - (TabModel*)parentTabModel {
   return parentTabModel_;
 }
 
 - (FormInputAccessoryViewController*)inputAccessoryViewController {
   return inputAccessoryViewController_.get();
 }
 
 @end