Delete dead signin code (SigninGlobalError)

chrome/browser/signin/signin_global_error_factory.cc

-// Copyright 2014 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_global_error_factory.h"
-
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/signin/signin_error_controller_factory.h"
-#include "chrome/browser/signin/signin_global_error.h"
-#include "chrome/browser/ui/global_error/global_error_service_factory.h"
-#include "components/keyed_service/content/browser_context_dependency_manager.h"
-#include "components/signin/core/browser/profile_oauth2_token_service.h"
-
-#if defined(USE_ASH)
-#include "ash/shell.h"
-#endif
-
-SigninGlobalErrorFactory::SigninGlobalErrorFactory()
-    : BrowserContextKeyedServiceFactory(
-        "SigninGlobalError",
-        BrowserContextDependencyManager::GetInstance()) {
-  DependsOn(SigninErrorControllerFactory::GetInstance());
-  DependsOn(GlobalErrorServiceFactory::GetInstance());
-}
-
-SigninGlobalErrorFactory::~SigninGlobalErrorFactory() {}
-
-// static
-SigninGlobalError* SigninGlobalErrorFactory::GetForProfile(
-    Profile* profile) {
-  return static_cast<SigninGlobalError*>(
-      GetInstance()->GetServiceForBrowserContext(profile, true));
-}
-
-// static
-SigninGlobalErrorFactory* SigninGlobalErrorFactory::GetInstance() {
-  return Singleton<SigninGlobalErrorFactory>::get();
-}
-
-KeyedService* SigninGlobalErrorFactory::BuildServiceInstanceFor(
-    content::BrowserContext* context) const {
-#if defined(USE_ASH)
-  if (ash::Shell::HasInstance())
-    return NULL;
-#endif
-
-  Profile* profile = static_cast<Profile*>(context);
-
-  return new SigninGlobalError(
-      SigninErrorControllerFactory::GetForProfile(profile), profile);
-}