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

chrome/browser/ui/webui/options/chromeos/core_chromeos_options_handler.h

Index: chrome/browser/ui/webui/options/chromeos/core_chromeos_options_handler.h
diff --git a/chrome/browser/ui/webui/options/chromeos/core_chromeos_options_handler.h b/chrome/browser/ui/webui/options/chromeos/core_chromeos_options_handler.h
index 122df379d328410cb11ae397df6bb7d00817bc16..19434745c231e4314f047d586870831e7dfc578f 100644
--- a/chrome/browser/ui/webui/options/chromeos/core_chromeos_options_handler.h
+++ b/chrome/browser/ui/webui/options/chromeos/core_chromeos_options_handler.h
@@ -21,10 +21,10 @@ class CoreChromeOSOptionsHandler : public CoreOptionsHandler {
  protected:
   // ::CoreOptionsHandler overrides
   virtual void Initialize();
-  virtual Value* FetchPref(const std::string& pref_name);
+  virtual base::Value* FetchPref(const std::string& pref_name);
   virtual void ObservePref(const std::string& pref_name);
   virtual void SetPref(const std::string& pref_name,
-                       const Value* value,
+                       const base::Value* value,
                        const std::string& metric);
   virtual void StopObservingPref(const std::string& path);
 
@@ -36,12 +36,15 @@ class CoreChromeOSOptionsHandler : public CoreOptionsHandler {
  private:
   // Notifies registered JS callbacks on ChromeOS setting change.
   void NotifySettingsChanged(const std::string* setting_name);
+  void NotifyNetworkChanged();
 
   // Keeps the track of change caused by the handler to make sure
   // it does not signal itself again.
   bool handling_change_;
 
   scoped_ptr<PrefSetObserver> proxy_prefs_;
+  content::NotificationRegistrar proxy_registrar_;
+  int proxy_registrar_clients_;
 };
 
 }  // namespace chromeos