Convert SigninTracker to use OAuth2TokenService notifications

chrome/browser/signin/signin_manager.cc

 // Copyright (c) 2012 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 "chrome/browser/signin/signin_manager.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 575 matching lines @@
 void SigninManager::CompletePendingSignin() {
   DCHECK(!possibly_invalid_username_.empty());
   OnSignedIn(possibly_invalid_username_);
 
   TokenService* token_service = TokenServiceFactory::GetForProfile(profile_);
   token_service->UpdateCredentials(last_result_);
   DCHECK(token_service->AreCredentialsValid());
   token_service->StartFetchingTokens();
 
   // If we have oauth2 tokens, tell token service about them so it does not
-  // need to fetch them again.
+  // need to fetch them again.  Its important that the authenticated name has
+  // already been set before sending the oauth2 token to the token service.
+  // Some token service listeners will query the authenticated name when they
+  // receive the token available notification.
   if (!temp_oauth_login_tokens_.refresh_token.empty()) {
+    DCHECK(!GetAuthenticatedUsername().empty());
     token_service->UpdateCredentialsWithOAuth2(temp_oauth_login_tokens_);
     temp_oauth_login_tokens_ = ClientOAuthResult();
   }
 }
 
 void SigninManager::OnExternalSigninCompleted(const std::string& username) {
   OnSignedIn(username);
 }
 
 void SigninManager::OnSignedIn(const std::string& username) {
@@ skipping 38 matching lines @@
   }
 }
 
 void SigninManager::ProhibitSignout(bool prohibit_signout) {
   prohibit_signout_ = prohibit_signout;
 }
 
 bool SigninManager::IsSignoutProhibited() const {
   return prohibit_signout_;
 }