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

chrome/browser/google/google_url_tracker.h

 // 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.
 
 #ifndef CHROME_BROWSER_GOOGLE_GOOGLE_URL_TRACKER_H_
 #define CHROME_BROWSER_GOOGLE_GOOGLE_URL_TRACKER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 19 matching lines @@
 // synchronously return a value at all times (even during startup or in unittest
 // mode).  Consumers who need to be notified when things change should listen to
 // the notification service for NOTIFY_GOOGLE_URL_UPDATED, and call GoogleURL()
 // again after receiving it, in order to get the updated value.
 //
 // To protect users' privacy and reduce server load, no updates will be
 // performed (ever) unless at least one consumer registers interest by calling
 // RequestServerCheck().
 class GoogleURLTracker : public URLFetcher::Delegate,
                          public NotificationObserver,
-                         public net::NetworkChangeNotifier::Observer {
+                         public net::NetworkChangeNotifier::IPAddressObserver {
  public:
   // Only the main browser process loop should call this, when setting up
   // g_browser_process->google_url_tracker_.  No code other than the
   // GoogleURLTracker itself should actually use
   // g_browser_process->google_url_tracker() (which shouldn't be hard, since
   // there aren't useful public functions on this object for consumers to access
   // anyway).
   GoogleURLTracker();
 
   virtual ~GoogleURLTracker();
@@ skipping 60 matching lines @@
                                   const net::URLRequestStatus& status,
                                   int response_code,
                                   const ResponseCookies& cookies,
                                   const std::string& data);
 
   // NotificationObserver
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
-  // NetworkChangeNotifier::Observer
+  // NetworkChangeNotifier::IPAddressObserver
   virtual void OnIPAddressChanged();
 
   void SearchCommitted();
   void OnNavigationPending(const NotificationSource& source,
                            const GURL& pending_url);
   void OnNavigationCommittedOrTabClosed(TabContents* tab_contents,
                                         NotificationType::Type type);
   void ShowGoogleURLInfoBarIfNecessary(TabContents* tab_contents);
 
   NotificationRegistrar registrar_;
@@ skipping 52 matching lines @@
 
  private:
   // ConfirmInfoBarDelegate:
   virtual string16 GetMessageText() const;
   virtual string16 GetButtonLabel(InfoBarButton button) const;
 
   DISALLOW_COPY_AND_ASSIGN(GoogleURLTrackerInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_GOOGLE_GOOGLE_URL_TRACKER_H_