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

chrome/common/chrome_notification_types.h

Index: chrome/common/chrome_notification_types.h
diff --git a/chrome/common/chrome_notification_types.h b/chrome/common/chrome_notification_types.h
index 207ae7b0a2d93953f46c5efc3736445e0edd6153..22ad1f906d0b8f919478546ed3a2d38d1529b9c6 100644
--- a/chrome/common/chrome_notification_types.h
+++ b/chrome/common/chrome_notification_types.h
@@ -825,6 +825,11 @@ enum NotificationType {
   // the changed setting.
   NOTIFICATION_SYSTEM_SETTING_CHANGED,
 
+  // This notification is sent when the current network has been changed from
+  // the UI and is used to update any proxy configuration windows that might be
+  // opened at that time.
+  NOTIFICATION_CURRENT_NETWORK_CHANGED,
+
   // Sent by SIM unlock dialog when it has finished with the process of
   // updating RequirePin setting. RequirePin setting might have been changed
   // to a new value or update might have been canceled.