Web restrictions component only.

components/web_restriction/web_restriction_provider.h

+// Copyright 2015 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 COMPONENTS_WEB_RESTRICTION_WEB_RESTRICTION_PROVIDER_H_
+#define COMPONENTS_WEB_RESTRICTION_WEB_RESTRICTION_PROVIDER_H_
+
+#include "base/callback_forward.h"
+#include "base/macros.h"
+#include "url/gurl.h"
+
+namespace web_restriction {
+
+enum UrlAccess {

[Bernhard Bauer, 2016/01/26 11:09:03]

Move this into the class?

[knn, 2016/01/26 14:37:44]

This is used in other places as well like the resource throttle and interstitial
as well as provider sub-classes. Isn't web_restriction namespace good enough?

+  ALLOW,
+  DISALLOW,
+  PENDING
+};
+
+class WebRestrictionProvider {
+ public:
+  virtual ~WebRestrictionProvider() {}
+
+  virtual UrlAccess ShouldProceed(
+      bool is_main_frame,
+      const GURL& url,
+      const base::Callback<void(bool)>& callback) = 0;
+
+  virtual bool SupportsRequest() const = 0;
+
+  virtual bool GetErrorHtml(const GURL& url, std::string* error_html) const = 0;
+
+  virtual void RequestPermission(
+      const GURL& url,
+      const base::Callback<void(bool)>& callback) = 0;
+};
+
+}  // namespace web_restriction
+
+#endif  // COMPONENTS_WEB_RESTRICTION_WEB_RESTRICTION_PROVIDER_H_