Remove CRWWebControllerProvider

ios/public/provider/web/web_controller_provider_factory.h

-// Copyright 2016 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 IOS_PUBLIC_PROVIDER_WEB_WEB_CONTROLLER_PROVIDER_FACTORY_H_
-#define IOS_PUBLIC_PROVIDER_WEB_WEB_CONTROLLER_PROVIDER_FACTORY_H_
-
-#include <memory>
-
-namespace web {
-class BrowserState;
-}
-
-namespace ios {
-
-class WebControllerProvider;
-
-// Factory for creation of WebControllerProvider instances.
-class WebControllerProviderFactory {
- public:
-  WebControllerProviderFactory();
-  virtual ~WebControllerProviderFactory();
-
-  // Vends WebControllerProviders created using |browser_state|, passing
-  // ownership to callers.
-  virtual std::unique_ptr<WebControllerProvider> CreateWebControllerProvider(
-      web::BrowserState* browser_state);
-};
-
-// Setter and getter for the provider factory. The provider factory should be
-// set early, before any component using WebControllerProviders is called.
-void SetWebControllerProviderFactory(
-    WebControllerProviderFactory* provider_factory);
-WebControllerProviderFactory* GetWebControllerProviderFactory();
-
-}  // namespace ios
-
-#endif  // IOS_PUBLIC_PROVIDER_WEB_WEB_CONTROLLER_PROVIDER_FACTORY_H_