Revert 130697 - Reland r130462: Implement FeatureProvider for ExtensionAPI."

chrome/common/extensions/feature_provider.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_COMMON_EXTENSIONS_FEATURE_PROVIDER_H_
-#define CHROME_COMMON_EXTENSIONS_FEATURE_PROVIDER_H_
-#pragma once
-
-#include <string>
-
-#include "base/memory/scoped_ptr.h"
-
-namespace extensions {
-
-class Feature;
-
-// Implemented by classes that can vend features.
-class FeatureProvider {
- public:
-  FeatureProvider() {}
-  virtual ~FeatureProvider() {}
-
-  // Returns the feature with the specified name.
-  virtual scoped_ptr<Feature> GetFeature(const std::string& name) = 0;
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_COMMON_EXTENSIONS_FEATURE_PROVIDER_H_