More URL constants replacement.

chrome/browser/tab_contents/navigation_controller.cc

 // Copyright (c) 2006-2008 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/tab_contents/navigation_controller.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 368 matching lines @@
   entries_.erase(entries_.begin() + index);
 
   if (last_committed_entry_index_ == index) {
     last_committed_entry_index_--;
     // We removed the currently shown entry, so we have to load something else.
     if (last_committed_entry_index_ != -1) {
       pending_entry_index_ = last_committed_entry_index_;
       NavigateToPendingEntry(false);
     } else {
       // If there is nothing to show, show a default page.
-      LoadURL(default_url.is_empty() ? GURL("about:blank") : default_url,
+      LoadURL(default_url.is_empty() ? GURL(chrome::kAboutBlankURL) :
+                  default_url,
               GURL(), PageTransition::START_PAGE);
     }
   } else if (last_committed_entry_index_ > index) {
     last_committed_entry_index_--;
   }
 }
 
 void NavigationController::Destroy() {
   // Close all tab contents owned by this controller.  We make a list on the
   // stack because they are removed from the map as they are Destroyed
@@ skipping 825 matching lines @@
       return i;
   }
   return -1;
 }
 
 NavigationEntry* NavigationController::GetTransientEntry() const {
   if (transient_entry_index_ == -1)
     return NULL;
   return entries_[transient_entry_index_].get();
 }