Remove all the ephemeral apps code.

chrome/browser/extensions/extension_util.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/extensions/extension_util.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/values.h"
@@ skipping 258 matching lines @@
 
 bool IsAppLaunchableWithoutEnabling(const std::string& extension_id,
                                     content::BrowserContext* context) {
   return ExtensionRegistry::Get(context)->GetExtensionById(
       extension_id, ExtensionRegistry::ENABLED) != NULL;
 }
 
 bool ShouldSync(const Extension* extension,
                 content::BrowserContext* context) {
   return sync_helper::IsSyncable(extension) &&
-         !util::IsEphemeralApp(extension->id(), context) &&
          !ExtensionPrefs::Get(context)->DoNotSync(extension->id());
 }
 
 bool IsExtensionIdle(const std::string& extension_id,
                      content::BrowserContext* context) {
   std::vector<std::string> ids_to_check;
   ids_to_check.push_back(extension_id);
 
   const Extension* extension =
       ExtensionRegistry::Get(context)
@@ skipping 93 matching lines @@
   base::FieldTrialList::FindFullName(
       kSupervisedUserExtensionPermissionIncreaseFieldTrialName);
   std::string value = variations::GetVariationParamValue(
       kSupervisedUserExtensionPermissionIncreaseFieldTrialName,
       profile->IsChild() ? "child_account" : "legacy_supervised_user");
   return value == "true";
 }
 
 }  // namespace util
 }  // namespace extensions