Updated redirect chain related TODO.

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 1000 matching lines @@
   if (item->GetURL() != originalURL) {
     // Simulate a valid redirect chain in case of URL that have been modified
     // in |CRWWebController finishHistoryNavigationFromEntry:|.
     const std::string& urlSpec = item->GetURL().spec();
     size_t urlSpecLength = urlSpec.size();
     if (item->GetTransitionType() & ui::PAGE_TRANSITION_CLIENT_REDIRECT ||
         (urlSpecLength && (urlSpec.at(urlSpecLength - 1) == '#') &&
          !urlSpec.compare(0, urlSpecLength - 1, originalURL.spec()))) {
       redirects.push_back(referrer.url);
     }
-    // TODO(crbug.com/661670): the redirect chain is not constructed the same
+    // TODO(crbug.com/703872): the redirect chain is not constructed the same
     // way as upstream so this part needs to be revised.
     redirects.push_back(originalURL);
     redirects.push_back(url);
   }
 
   DCHECK(item->GetTimestamp().ToInternalValue() > 0);
   if ([self isPrerenderTab]) {
     // Clicks on content suggestions on the NTP should not contribute to the
     // Most Visited tiles in the NTP.
     const bool consider_for_ntp_most_visited =
@@ skipping 1055 matching lines @@
 
 - (TabModel*)parentTabModel {
   return parentTabModel_;
 }
 
 - (FormInputAccessoryViewController*)inputAccessoryViewController {
   return inputAccessoryViewController_.get();
 }
 
 @end