Automatically retry the following URLFetchers when the network changes:

chrome/browser/policy/app_pack_updater.h

Index: chrome/browser/policy/app_pack_updater.h
diff --git a/chrome/browser/policy/app_pack_updater.h b/chrome/browser/policy/app_pack_updater.h
index 057b481277b250134e773c16860211b98203264f..142ec9aee05a3a4c0bce7636bf7e64a3a3312672 100644
--- a/chrome/browser/policy/app_pack_updater.h
+++ b/chrome/browser/policy/app_pack_updater.h
@@ -18,7 +18,6 @@
 #include "chrome/browser/extensions/updater/extension_downloader_delegate.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
-#include "net/base/network_change_notifier.h"
 
 class GURL;
 
@@ -45,7 +44,6 @@ class EnterpriseInstallAttributes;
 // device policy to be locally cached and installed into the Demo user account
 // at login time.
 class AppPackUpdater : public content::NotificationObserver,
-                       public net::NetworkChangeNotifier::IPAddressObserver,
                        public extensions::ExtensionDownloaderDelegate {
  public:
   // Callback to listen for updates to the screensaver extension's path.
@@ -77,18 +75,13 @@ class AppPackUpdater : public content::NotificationObserver,
   void OnDamagedFileDetected(const FilePath& path);
 
  private:
-  struct AppPackEntry {
-    std::string update_url;
-    bool update_checked;
-  };
-
   struct CacheEntry {
     std::string path;
     std::string cached_version;
   };
 
-  // Maps an extension ID to its update URL and update information.
-  typedef std::map<std::string, AppPackEntry> PolicyEntryMap;
+  // Maps an extension ID to its update URL.
+  typedef std::map<std::string, std::string> PolicyEntryMap;
 
   // Maps an extension ID to a CacheEntry.
   typedef std::map<std::string, CacheEntry> CacheEntryMap;
@@ -100,9 +93,6 @@ class AppPackUpdater : public content::NotificationObserver,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
-  // net::NetworkChangeNotifier::IPAddressObserver:
-  virtual void OnIPAddressChanged() OVERRIDE;
-
   // Loads the current policy and schedules a cache update.
   void LoadPolicy();
 
@@ -186,10 +176,6 @@ class AppPackUpdater : public content::NotificationObserver,
   // appropriate.
   void SetScreenSaverPath(const FilePath& path);
 
-  // Marks extension |id| in |app_pack_extensions_| as having already been
-  // checked for updates, if it exists.
-  void SetUpdateChecked(const std::string& id);
-
   base::WeakPtrFactory<AppPackUpdater> weak_ptr_factory_;
 
   // Observes failures to install CRX files.