Plumb through NetworkChangeNotifier::IsOffline() to WebKit, enabling

chrome/browser/google/google_url_tracker.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/google/google_url_tracker.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
@@ skipping 87 matching lines @@
       in_startup_sleep_(true),
       already_fetched_(false),
       need_to_fetch_(false),
       request_context_available_(!!Profile::GetDefaultRequestContext()),
       need_to_prompt_(false),
       controller_(NULL),
       infobar_(NULL) {
   registrar_.Add(this, NotificationType::DEFAULT_REQUEST_CONTEXT_AVAILABLE,
                  NotificationService::AllSources());
 
-  net::NetworkChangeNotifier::AddObserver(this);
+  net::NetworkChangeNotifier::AddIPAddressObserver(this);
 
   MessageLoop::current()->PostTask(FROM_HERE,
                                    runnable_method_factory_.NewRunnableMethod(
                                    &GoogleURLTracker::QueueWakeupTask));
 }
 
 GoogleURLTracker::~GoogleURLTracker() {
   runnable_method_factory_.RevokeAll();
-  net::NetworkChangeNotifier::RemoveObserver(this);
+  net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
 }
 
 // static
 GURL GoogleURLTracker::GoogleURL() {
   const GoogleURLTracker* const tracker =
       g_browser_process->google_url_tracker();
   return tracker ? tracker->google_url_ : GURL(kDefaultGoogleHomepage);
 }
 
 // static
@@ skipping 239 matching lines @@
 }
 
 void GoogleURLTracker::ShowGoogleURLInfoBarIfNecessary(
     TabContents* tab_contents) {
   if (!need_to_prompt_)
     return;
   DCHECK(!fetched_google_url_.is_empty());
 
   infobar_ = (*infobar_creator_)(tab_contents, this, fetched_google_url_);
 }