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

chrome/browser/intranet_redirect_detector.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/intranet_redirect_detector.h"
 
 #include "base/command_line.h"
 #include "base/rand_util.h"
 #include "base/stl_util-inl.h"
 #include "base/utf_string_conversions.h"
@@ skipping 24 matching lines @@
   // long enough to be after startup, but still get results back quickly.
   // Ideally, instead of this timer, we'd do something like "check if the
   // browser is starting up, and if so, come back later", but there is currently
   // no function to do this.
   static const int kStartFetchDelayMS = 7000;
   MessageLoop::current()->PostDelayedTask(FROM_HERE,
       fetcher_factory_.NewRunnableMethod(
           &IntranetRedirectDetector::FinishSleep),
       kStartFetchDelayMS);
 
-  net::NetworkChangeNotifier::AddObserver(this);
+  net::NetworkChangeNotifier::AddIPAddressObserver(this);
 }
 
 IntranetRedirectDetector::~IntranetRedirectDetector() {
-  net::NetworkChangeNotifier::RemoveObserver(this);
+  net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
   STLDeleteElements(&fetchers_);
 }
 
 // static
 GURL IntranetRedirectDetector::RedirectOrigin() {
   const IntranetRedirectDetector* const detector =
       g_browser_process->intranet_redirect_detector();
   return detector ? detector->redirect_origin_ : GURL();
 }
 
@@ skipping 136 matching lines @@
   // the same thread.  So just use the heuristic that any all-lowercase a-z
   // hostname with the right number of characters is likely from the detector
   // (and thus should be blocked).
   return ((host.length() == IntranetRedirectDetector::kNumCharsInHostnames) &&
       (host.find_first_not_of("abcdefghijklmnopqrstuvwxyz") ==
           std::string::npos)) ?
       net::ERR_NAME_NOT_RESOLVED :
       ResolveUsingPrevious(host, address_family, host_resolver_flags, addrlist,
                            os_error);
 }