[iOS] Upstream web_controller_provider_impl.{h,mm}.

ios/chrome/browser/web/web_controller_provider_factory_impl.h

Index: ios/chrome/browser/web/web_controller_provider_factory_impl.h
diff --git a/ios/chrome/browser/web/web_controller_provider_factory_impl.h b/ios/chrome/browser/web/web_controller_provider_factory_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..c8679145f5718c95007b0aaea80a8ec791fc8bbe
--- /dev/null
+++ b/ios/chrome/browser/web/web_controller_provider_factory_impl.h
@@ -0,0 +1,24 @@
+// 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_CHROME_BROWSER_WEB_WEB_CONTROLLER_PROVIDER_FACTORY_IMPL_H_
+#define IOS_CHROME_BROWSER_WEB_WEB_CONTROLLER_PROVIDER_FACTORY_IMPL_H_
+
+#include <memory>
+
+#import "ios/public/provider/web/web_controller_provider_factory.h"
+
+// Concrete implementation of ios::WebControllerProviderFactory.
+class WebControllerProviderFactoryImpl
+    : public ios::WebControllerProviderFactory {
+ public:
+  WebControllerProviderFactoryImpl();
+  ~WebControllerProviderFactoryImpl() override;
+
+  // ios::WebControllerProviderFactory implementation.
+  std::unique_ptr<ios::WebControllerProvider> CreateWebControllerProvider(
+      web::BrowserState* browser_state) override;
+};
+
+#endif  // IOS_CHROME_BROWSER_WEB_WEB_CONTROLLER_PROVIDER_FACTORY_IMPL_H_