Introduce WebRequestEventRouterDelegate.

chrome/browser/extensions/api/web_request/chrome_extra_request_params.h

+// Copyright (c) 2014 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_EXTENSIONS_API_WEB_REQUEST_CHROME_EXTRA_REQUEST_PARAMS_H_
+#define CHROME_BROWSER_EXTENSIONS_API_WEB_REQUEST_CHROME_EXTRA_REQUEST_PARAMS_H_
+
+#include "extensions/browser/api/web_request/extra_request_params.h"
+
+class ChromeExtraRequestParams : public ExtraRequestParams{
+ public:
+  ChromeExtraRequestParams();
+  explicit ChromeExtraRequestParams(const ChromeExtraRequestParams& params);
+  virtual ~ChromeExtraRequestParams();
+
+  // ExtraRequestParams implementations:
+  virtual bool OnInitFromValueCheck(
+      const base::DictionaryValue& value) OVERRIDE;
+  virtual bool OnGetMatchingListenersImplCheck(
+      net::URLRequest* request) const OVERRIDE;
+
+  int tab_id() const { return tab_id_; }
+  int window_id() const { return window_id_; }
+
+ private:
+  int tab_id_;
+  int window_id_;
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_WEB_REQUEST_CHROME_EXTRA_REQUEST_PARAMS_H_