Move EmptyString, kWhitespace and the BOM to base.

chrome/browser/signin/token_service.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/signin/token_service.h"
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string_util.h"
@@ skipping 92 matching lines @@
 }
 
 // Services dependent on a token will check if a token is available.
 // If it isn't, they'll go to sleep until they get a token event.
 bool TokenService::HasTokenForService(const char* service) const {
   return false;
 }
 
 const std::string& TokenService::GetTokenForService(
     const char* const service) const {
-  return EmptyString();
+  return base::EmptyString();
 }
 
 bool TokenService::HasOAuthLoginToken() const {
   ProfileOAuth2TokenService* service =
       ProfileOAuth2TokenServiceFactory::GetForProfile(profile_);
   return service->RefreshTokenIsAvailable(service->GetPrimaryAccountId());
 }
 
 void TokenService::IssueAuthTokenForTest(const std::string& service,
                                          const std::string& auth_token) {
   // Only issue oauth2 tokens.
   if (profile_ && service == GaiaConstants::kGaiaOAuth2LoginRefreshToken) {
     ProfileOAuth2TokenService* token_service =
         ProfileOAuth2TokenServiceFactory::GetForProfile(profile_);
 #if defined(ENABLE_MANAGED_USERS)
     std::string account_id = profile_->IsManaged() ?
         managed_users::kManagedUserPseudoEmail :
         token_service->GetPrimaryAccountId();
 #else
     std::string account_id = token_service->GetPrimaryAccountId();
 #endif
     DCHECK(!account_id.empty());
     token_service->UpdateCredentials(account_id, auth_token);
   }
 }