Dynamically update sign-in/Sync status in the profile creation overlay.

chrome/browser/ui/webui/options/manage_profile_handler.h

Index: chrome/browser/ui/webui/options/manage_profile_handler.h
diff --git a/chrome/browser/ui/webui/options/manage_profile_handler.h b/chrome/browser/ui/webui/options/manage_profile_handler.h
index 1c6c7805316aa4b5ff81dc1b6546f114e61466a2..d9dbd26309e81053e714ff784b1aa5944ae6b5ef 100644
--- a/chrome/browser/ui/webui/options/manage_profile_handler.h
+++ b/chrome/browser/ui/webui/options/manage_profile_handler.h
@@ -9,6 +9,7 @@
 
 #include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_change_registrar.h"
+#include "chrome/browser/sync/profile_sync_service_observer.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
 
 namespace base {
@@ -18,7 +19,8 @@ class StringValue;
 namespace options {
 
 // Chrome personal stuff profiles manage overlay UI handler.
-class ManageProfileHandler : public OptionsPageUIHandler {
+class ManageProfileHandler : public OptionsPageUIHandler,
+                             public ProfileSyncServiceObserver {
  public:
   ManageProfileHandler();
   virtual ~ManageProfileHandler();
@@ -37,6 +39,9 @@ class ManageProfileHandler : public OptionsPageUIHandler {
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
+  // ProfileSyncServiceObserver:
+  virtual void OnStateChanged() OVERRIDE;
+
  private:
   // Callback for the "requestDefaultProfileIcons" message.
   // Sends the array of default profile icon URLs to WebUI.