Refactor proxy handling for ChromeOS to not go through the CrosSettings interface.

chrome/browser/chromeos/proxy_config_service_impl.h

Index: chrome/browser/chromeos/proxy_config_service_impl.h
diff --git a/chrome/browser/chromeos/proxy_config_service_impl.h b/chrome/browser/chromeos/proxy_config_service_impl.h
index dc2561888c2aff6f2f0185e004877124162afee0..b059080415bb9c678950d5f6151e666ecfc3b011 100644
--- a/chrome/browser/chromeos/proxy_config_service_impl.h
+++ b/chrome/browser/chromeos/proxy_config_service_impl.h
@@ -182,6 +182,15 @@ class ProxyConfigServiceImpl
   // Only valid for MODE_SINGLE_PROXY or MODE_PROXY_PER_SCHEME.
   bool UISetProxyConfigBypassRules(const net::ProxyBypassRules& bypass_rules);
 
+  // Add/Remove callback functions for notification when network to be viewed is
+  // changed by the UI.
+  void AddNotificationCallback(base::Closure callback);
+  void RemoveNotificationCallback(base::Closure callback);
+
+  // PrefProxyConfigTrackerImpl implementation.
+  virtual void OnProxyConfigChanged(ProxyPrefs::ConfigState config_state,
+                                    const net::ProxyConfig& config) OVERRIDE;
+
   // Implementation for SignedSettings::Delegate
   virtual void OnSettingsOpCompleted(SignedSettings::ReturnCode code,
                                      std::string value) OVERRIDE;
@@ -193,10 +202,6 @@ class ProxyConfigServiceImpl
   virtual void OnNetworkChanged(NetworkLibrary* cros,
                                 const Network* network) OVERRIDE;
 
-  // PrefProxyConfigTrackerImpl implementation.
-  virtual void OnProxyConfigChanged(ProxyPrefs::ConfigState config_state,
-                                    const net::ProxyConfig& config) OVERRIDE;
-
   // Register UseShardProxies preference.
   static void RegisterPrefs(PrefService* pref_service);
 
@@ -293,6 +298,10 @@ class ProxyConfigServiceImpl
   // Operation to retrieve proxy setting from device.
   scoped_refptr<SignedSettings> retrieve_property_op_;
 
+  // Callbacks for notification when network to be viewed has been changed from
+  // the UI.
+  std::vector<base::Closure> callbacks_;
+
   DISALLOW_COPY_AND_ASSIGN(ProxyConfigServiceImpl);
 };