Allow signin to continue even if sync is disabled by policy.

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/callback_helpers.h"
@@ skipping 183 matching lines @@
 
 SigninManager::~SigninManager() {
   DCHECK(!signin_global_error_.get()) <<
       "SigninManager::Initialize called but not SigninManager::Shutdown";
 }
 
 void SigninManager::Initialize(Profile* profile) {
   // Should never call Initialize() twice.
   DCHECK(!IsInitialized());
   profile_ = profile;
-  signin_global_error_.reset(new SigninGlobalError(profile));
+  signin_global_error_.reset(new SigninGlobalError(this, profile));
   GlobalErrorServiceFactory::GetForProfile(profile_)->AddGlobalError(
       signin_global_error_.get());
   PrefService* local_state = g_browser_process->local_state();
   // local_state can be null during unit tests.
   if (local_state) {
     local_state_pref_registrar_.Init(local_state);
     local_state_pref_registrar_.Add(
         prefs::kGoogleServicesUsernamePattern,
         base::Bind(&SigninManager::OnGoogleServicesUsernamePatternChanged,
                    base::Unretained(this)));
@@ skipping 52 matching lines @@
   if (registrar_.IsRegistered(this,
                               chrome::NOTIFICATION_TOKEN_AVAILABLE,
                               token_service)) {
     registrar_.Remove(this,
                       chrome::NOTIFICATION_TOKEN_AVAILABLE,
                       token_service);
   }
 #endif
 }
 
-const std::string& SigninManager::GetAuthenticatedUsername() {
+const std::string& SigninManager::GetAuthenticatedUsername() const {
   return authenticated_username_;
 }
 
 void SigninManager::SetAuthenticatedUsername(const std::string& username) {
   if (!authenticated_username_.empty()) {
     DLOG_IF(ERROR, username != authenticated_username_) <<
         "Tried to change the authenticated username to something different: " <<
         "Current: " << authenticated_username_ << ", New: " << username;
     return;
   }
@@ skipping 494 matching lines @@
                     NotifySigninValueChanged(field, value));
 }
 
 void SigninManager::NotifyDiagnosticsObservers(
     const TimedSigninStatusField& field,
     const std::string& value) {
   FOR_EACH_OBSERVER(SigninDiagnosticsObserver,
                     signin_diagnostics_observers_,
                     NotifySigninValueChanged(field, value));
 }