Refactored SettingsFrontend and forwarding of calls to the backends.

chrome/browser/extensions/settings/managed_value_store_cache.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/extensions/settings/managed_value_store_cache.h"
+
+#include "base/logging.h"
+#include "base/message_loop_proxy.h"
+#include "base/sequenced_task_runner.h"
+#include "chrome/common/extensions/extension.h"
+#include "content/public/browser/browser_thread.h"
+
+using content::BrowserThread;
+
+namespace extensions {
+
+ManagedValueStoreCache::ManagedValueStoreCache(
+    policy::PolicyService* policy_service) {}
+
+ManagedValueStoreCache::~ManagedValueStoreCache() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+}
+
+scoped_refptr<base::MessageLoopProxy>
+    ManagedValueStoreCache::GetMessageLoop() const {
+  return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI);
+}
+
+void ManagedValueStoreCache::RunWithValueStoreForExtension(
+    const StorageCallback& callback,
+    scoped_refptr<const Extension> extension) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  NOTREACHED() << "Not implemented yet.";
+  callback.Run(NULL);
+}
+
+void ManagedValueStoreCache::DeleteStorageSoon(
+    const std::string& extension_id) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  // Not implemented yet.
+}
+
+}  // namespace extensions