Expose ReconcilorState. Rename MergeSession in Signin Tracker.

components/signin/core/browser/signin_tracker.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/signin/core/browser/signin_tracker.h"
 
 #include "components/signin/core/browser/gaia_cookie_manager_service.h"
 #include "components/signin/core/browser/profile_oauth2_token_service.h"
 #include "components/signin/core/browser/signin_client.h"
 #include "google_apis/gaia/gaia_constants.h"
@@ skipping 35 matching lines @@
   observer_->SigninSuccess();
 }
 
 void SigninTracker::OnRefreshTokenRevoked(const std::string& account_id) {
   NOTREACHED();
 }
 
 void SigninTracker::OnAddAccountToCookieCompleted(
     const std::string& account_id,
     const GoogleServiceAuthError& error) {
-  observer_->MergeSessionComplete(error);
+  observer_->AccountAddedToCookie(error);
 }