Use computed index.

chrome/browser/sessions/session_restore.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/sessions/session_restore.h"
 
 #include <algorithm>
 #include <list>
 #include <set>
 #include <vector>
@@ skipping 666 matching lines @@
                   Browser* browser,
                   bool schedule_load) {
     DCHECK(!tab.navigations.empty());
     int selected_index = tab.current_navigation_index;
     selected_index = std::max(
         0,
         std::min(selected_index,
                  static_cast<int>(tab.navigations.size() - 1)));
 
     // Record an app launch, if applicable.
-    GURL url = tab.navigations.at(tab.current_navigation_index).virtual_url();
+    GURL url = tab.navigations.at(selected_index).virtual_url();
     if (
 #if defined(OS_CHROMEOS)
         browser->profile()->GetExtensionService() &&
 #endif
         browser->profile()->GetExtensionService()->IsInstalledApp(url)) {
       UMA_HISTOGRAM_ENUMERATION(extension_misc::kAppLaunchHistogram,
                                 extension_misc::APP_LAUNCH_SESSION_RESTORE,
                                 extension_misc::APP_LAUNCH_BUCKET_BOUNDARY);
     }
 
@@ skipping 156 matching lines @@
   std::vector<GURL> gurls;
   SessionRestoreImpl restorer(profile,
       static_cast<Browser*>(NULL), true, false, true, gurls);
   restorer.RestoreForeignTab(tab);
 }
 
 // static
 bool SessionRestore::IsRestoring() {
   return restoring;
 }