Remove all the ephemeral apps code.

chrome/browser/apps/ephemeral_app_service_factory.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/apps/ephemeral_app_service_factory.h"
-
-#include "apps/app_lifetime_monitor_factory.h"
-#include "chrome/browser/apps/ephemeral_app_service.h"
-#include "chrome/browser/profiles/profile.h"
-#include "components/keyed_service/content/browser_context_dependency_manager.h"
-#include "extensions/browser/extension_system_provider.h"
-#include "extensions/browser/extensions_browser_client.h"
-
-using extensions::ExtensionsBrowserClient;
-
-// static
-EphemeralAppService*
-EphemeralAppServiceFactory::GetForProfile(Profile* profile) {
-  return static_cast<EphemeralAppService*>(
-      GetInstance()->GetServiceForBrowserContext(profile, true));
-}
-
-// static
-EphemeralAppServiceFactory* EphemeralAppServiceFactory::GetInstance() {
-  return base::Singleton<EphemeralAppServiceFactory>::get();
-}
-
-EphemeralAppServiceFactory::EphemeralAppServiceFactory()
-    : BrowserContextKeyedServiceFactory(
-          "EphemeralAppService",
-          BrowserContextDependencyManager::GetInstance()) {
-  DependsOn(ExtensionsBrowserClient::Get()->GetExtensionSystemFactory());
-  DependsOn(apps::AppLifetimeMonitorFactory::GetInstance());
-}
-
-EphemeralAppServiceFactory::~EphemeralAppServiceFactory() {
-}
-
-KeyedService* EphemeralAppServiceFactory::BuildServiceInstanceFor(
-    content::BrowserContext* context) const {
-  return new EphemeralAppService(Profile::FromBrowserContext(context));
-}
-
-content::BrowserContext* EphemeralAppServiceFactory::GetBrowserContextToUse(
-    content::BrowserContext* context) const {
-  return ExtensionsBrowserClient::Get()->GetOriginalContext(context);
-}
-
-bool EphemeralAppServiceFactory::ServiceIsCreatedWithBrowserContext() const {
-  return true;
-}
-
-bool EphemeralAppServiceFactory::ServiceIsNULLWhileTesting() const {
-  return true;
-}