Implement device token fetcher

chrome/browser/net/gaia/token_service.cc

 // Copyright (c) 2010 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/net/gaia/token_service.h"
 
 #include "base/command_line.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser_thread.h"
 #include "chrome/browser/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/net/gaia/gaia_authenticator2.h"
 #include "chrome/common/net/gaia/gaia_constants.h"
 #include "chrome/common/net/url_request_context_getter.h"
 #include "chrome/common/notification_service.h"
 
 // Unfortunately kNumServices must be defined in the .h.
 // TODO(chron): Sync doesn't use the TalkToken anymore so we can stop
 //              requesting it.
-const char* TokenService::kServices[] = {GaiaConstants::kSyncService,
-                                         GaiaConstants::kTalkService};
+const char* TokenService::kServices[] = {
+  GaiaConstants::kSyncService,
+  GaiaConstants::kTalkService,
+  GaiaConstants::kDeviceManagementService
+};
+
 TokenService::TokenService()
     : token_loading_query_(0) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }
 
 TokenService::~TokenService() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   ResetCredentialsInMemory();
 }
 
@@ skipping 215 matching lines @@
 }
 
 void TokenService::Observe(NotificationType type,
                            const NotificationSource& source,
                            const NotificationDetails& details) {
   DCHECK(type == NotificationType::TOKEN_UPDATED);
   TokenAvailableDetails* tok_details =
       Details<TokenAvailableDetails>(details).ptr();
   OnIssueAuthTokenSuccess(tok_details->service(), tok_details->token());
 }