[DICE] Enable sync for an account that is already present in the token service.

components/policy/core/common/cloud/cloud_policy_client_registration_helper.cc

 // Copyright 2013 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/policy/core/common/cloud/cloud_policy_client_registration_helper.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/time/time.h"
@@ skipping 184 matching lines @@
 
   login_token_helper_.reset(
       new CloudPolicyClientRegistrationHelper::LoginTokenHelper());
   login_token_helper_->FetchAccessToken(
       login_refresh_token,
       context_.get(),
       base::Bind(&CloudPolicyClientRegistrationHelper::OnTokenFetched,
                  base::Unretained(this)));
 }
 
-void CloudPolicyClientRegistrationHelper::StartRegistrationWithAccessToken(
-    const std::string& access_token,
-    const base::Closure& callback) {
-  DCHECK(!client_->is_registered());
-  callback_ = callback;
-  client_->AddObserver(this);
-  OnTokenFetched(access_token);
-}
-
 // static
 std::vector<std::string>
 CloudPolicyClientRegistrationHelper::GetScopes() {
   std::vector<std::string> scopes;
   scopes.push_back(GaiaConstants::kDeviceManagementServiceOAuth);
   scopes.push_back(GaiaConstants::kOAuthWrapBridgeUserInfoScope);
   return scopes;
 }
 #endif
 
@@ skipping 76 matching lines @@
 void CloudPolicyClientRegistrationHelper::RequestCompleted() {
   if (client_) {
     client_->RemoveObserver(this);
     // |client_| may be freed by the callback so clear it now.
     client_ = NULL;
     callback_.Run();
   }
 }
 
 }  // namespace policy