Unrevert r141537: Add extensions::StateStore and use that instead of

chrome/browser/value_store/testing_value_store_unittest.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/value_store/value_store_unittest.h"
 
 #include "chrome/browser/value_store/testing_value_store.h"
 
 namespace extensions {
 
 namespace {
 
 ValueStore* Param(const FilePath& file_path) {
-  return new TestingSettingsStorage();
+  return new TestingValueStore();
 }
 
 }  // namespace
 
 INSTANTIATE_TEST_CASE_P(
-    TestingSettingsStorage,
+    TestingValueStore,
     ValueStoreTest,
     testing::Values(&Param));
 
 }  // namespace extensions