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

chrome/browser/value_store/testing_value_store.h

 // 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.
 
 #ifndef CHROME_BROWSER_VALUE_STORE_TESTING_VALUE_STORE_H_
 #define CHROME_BROWSER_VALUE_STORE_TESTING_VALUE_STORE_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/value_store/value_store.h"
 
 // ValueStore for testing, with an in-memory storage but the ability to
 // optionally fail all operations.
-class TestingSettingsStorage : public ValueStore {
+class TestingValueStore : public ValueStore {
  public:
-  TestingSettingsStorage();
-  virtual ~TestingSettingsStorage();
+  TestingValueStore();
+  virtual ~TestingValueStore();
 
   // Sets whether to fail all requests (default is false).
   void SetFailAllRequests(bool fail_all_requests);
 
   // ValueStore implementation.
   virtual size_t GetBytesInUse(const std::string& key) OVERRIDE;
   virtual size_t GetBytesInUse(const std::vector<std::string>& keys) OVERRIDE;
   virtual size_t GetBytesInUse() OVERRIDE;
   virtual ReadResult Get(const std::string& key) OVERRIDE;
   virtual ReadResult Get(const std::vector<std::string>& keys) OVERRIDE;
   virtual ReadResult Get() OVERRIDE;
   virtual WriteResult Set(
       WriteOptions options,
       const std::string& key,
       const Value& value) OVERRIDE;
   virtual WriteResult Set(
       WriteOptions options, const DictionaryValue& values) OVERRIDE;
   virtual WriteResult Remove(const std::string& key) OVERRIDE;
   virtual WriteResult Remove(const std::vector<std::string>& keys) OVERRIDE;
   virtual WriteResult Clear() OVERRIDE;
 
  private:
   DictionaryValue storage_;
 
   bool fail_all_requests_;
 
-  DISALLOW_COPY_AND_ASSIGN(TestingSettingsStorage);
+  DISALLOW_COPY_AND_ASSIGN(TestingValueStore);
 };
 
 #endif  // CHROME_BROWSER_VALUE_STORE_TESTING_VALUE_STORE_H_