Add IsAuthenticated() method to SigninManager.

chrome/browser/ui/app_list/search/people/people_result.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 "chrome/browser/ui/app_list/search/people/people_result.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
@@ skipping 134 matching lines @@
 
 void PeopleResult::OpenChat() {
   HangoutRequest request;
 
   request.type = extensions::api::hangouts_private::HANGOUT_TYPE_CHAT;
 
   // from: the user this chat request is originating from.
   SigninManagerBase* signin_manager =
       SigninManagerFactory::GetInstance()->GetForProfile(profile_);
   DCHECK(signin_manager);
-  request.from = signin_manager->GetAuthenticatedAccountId();
+  request.from = signin_manager->GetAuthenticatedUsername();
 
   // to: list of users with whom to start this hangout is with.
   linked_ptr<User> target(new User());
   target->id = person_->owner_id;
   request.to.push_back(target);
 
   scoped_ptr<extensions::Event> event(
       new extensions::Event(OnHangoutRequested::kEventName,
                             OnHangoutRequested::Create(request)));
 
@@ skipping 26 matching lines @@
     }
   }
   hangouts_extension_id_.clear();
 }
 
 ChromeSearchResultType PeopleResult::GetType() {
   return SEARCH_PEOPLE_SEARCH_RESULT;
 }
 
 }  // namespace app_list