[cros] Resolve online login attempt on UI thread.

chrome/browser/chromeos/login/online_attempt_host.h

Index: chrome/browser/chromeos/login/online_attempt_host.h
diff --git a/chrome/browser/chromeos/login/online_attempt_host.h b/chrome/browser/chromeos/login/online_attempt_host.h
index babe2f3565f366394ebc246df145623c4b894db0..ea2b48dc2724451d0112f873bad2984f269c198c 100644
--- a/chrome/browser/chromeos/login/online_attempt_host.h
+++ b/chrome/browser/chromeos/login/online_attempt_host.h
@@ -43,8 +43,12 @@ class OnlineAttemptHost : public AuthAttemptStateResolver {
   void Reset();
 
   // AuthAttemptStateResolver overrides.
+  // Executed on IO thread.
   virtual void Resolve() OVERRIDE;
 
+  // Does an actual resolve on UI thread.
+  void ResolveOnUIThread(bool success);
+
  private:
   Delegate* delegate_;
   std::string current_attempt_hash_;