Extension Settings API: make it so that when leveldb storage areas fail to be

chrome/browser/extensions/settings/failing_settings_storage.cc

+// Copyright (c) 2011 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/failing_settings_storage.h"
+
+namespace extensions {
+
+namespace {
+
+const char* kGenericErrorMessage = "Failed to initialize settings";
+
+SettingsStorage::ReadResult ReadResultError() {
+  return SettingsStorage::ReadResult(kGenericErrorMessage);
+}
+
+SettingsStorage::WriteResult WriteResultError() {
+  return SettingsStorage::WriteResult(kGenericErrorMessage);
+}
+
+}  // namespace
+
+SettingsStorage::ReadResult FailingSettingsStorage::Get(
+    const std::string& key) {
+  return ReadResultError();
+}
+
+SettingsStorage::ReadResult FailingSettingsStorage::Get(
+    const std::vector<std::string>& keys) {
+  return ReadResultError();
+}
+
+SettingsStorage::ReadResult FailingSettingsStorage::Get() {
+  return ReadResultError();
+}
+
+SettingsStorage::WriteResult FailingSettingsStorage::Set(
+    const std::string& key, const Value& value) {
+  return WriteResultError();
+}
+
+SettingsStorage::WriteResult FailingSettingsStorage::Set(
+    const DictionaryValue& settings) {
+  return WriteResultError();
+}
+
+SettingsStorage::WriteResult FailingSettingsStorage::Remove(
+    const std::string& key) {
+  return WriteResultError();
+}
+
+SettingsStorage::WriteResult FailingSettingsStorage::Remove(
+    const std::vector<std::string>& keys) {
+  return WriteResultError();
+}
+
+SettingsStorage::WriteResult FailingSettingsStorage::Clear() {
+  return WriteResultError();
+}
+
+}  // namespace extensions