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diff --git a/chromium/extensions/browser/api/web_request/web_request_permissions.h b/chromium/extensions/browser/api/web_request/web_request_permissions.h
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index 00000000000..f24b019eecc
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+++ b/chromium/extensions/browser/api/web_request/web_request_permissions.h
@@ -0,0 +1,52 @@
+// 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 EXTENSIONS_BROWSER_API_WEB_REQUEST_WEB_REQUEST_PERMISSIONS_H_
+#define EXTENSIONS_BROWSER_API_WEB_REQUEST_WEB_REQUEST_PERMISSIONS_H_
+
+#include <map>
+#include <string>
+
+#include "base/macros.h"
+#include "extensions/common/permissions/permissions_data.h"
+
+class GURL;
+
+namespace extensions {
+class InfoMap;
+}
+
+namespace net {
+class URLRequest;
+}
+
+// This class is used to test whether extensions may modify web requests.
+class WebRequestPermissions {
+ public:
+  // Different host permission checking modes for CanExtensionAccessURL.
+  enum HostPermissionsCheck {
+    DO_NOT_CHECK_HOST = 0,    // No check.
+    REQUIRE_HOST_PERMISSION,  // Permission needed for given URL.
+    REQUIRE_ALL_URLS          // Permission needed for <all_urls>.
+  };
+
+  // Returns true if the request shall not be reported to extensions.
+  static bool HideRequest(const extensions::InfoMap* extension_info_map,
+                          const net::URLRequest* request);
+
+  // |host_permission_check| controls how permissions are checked with regard to
+  // |url|.
+  static extensions::PermissionsData::AccessType CanExtensionAccessURL(
+      const extensions::InfoMap* extension_info_map,
+      const std::string& extension_id,
+      const GURL& url,
+      int tab_id,
+      bool crosses_incognito,
+      HostPermissionsCheck host_permissions_check);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(WebRequestPermissions);
+};
+
+#endif  // EXTENSIONS_BROWSER_API_WEB_REQUEST_WEB_REQUEST_PERMISSIONS_H_