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diff --git a/net/base/cookie_policy.h b/net/base/cookie_policy.h
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+++ b/net/base/cookie_policy.h
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef NET_BASE_COOKIE_POLICY_H__
+#define NET_BASE_COOKIE_POLICY_H__
+
+#include "googleurl/src/gurl.h"
+
+// The CookiePolicy class implements third-party cookie blocking.
+class CookiePolicy {
+ public:
+  // Consult the user's third-party cookie blocking preferences to determine
+  // whether the URL's cookies can be read if the top-level window is policy_url
+  bool CanGetCookies(const GURL& url, const GURL& policy_url);
+
+  // Consult the user's third-party cookie blocking preferences to determine
+  // whether the URL's cookies can be set if the top-level window is policy_url
+  bool CanSetCookie(const GURL& url, const GURL& policy_url);
+
+  enum Type {
+    ALLOW_ALL_COOKIES = 0,      // do not perform any cookie blocking
+    BLOCK_THIRD_PARTY_COOKIES,  // prevent third-party cookies from being sent
+    BLOCK_ALL_COOKIES           // disable cookies
+  };
+
+  static bool ValidType(int32 type) {
+    return type >= ALLOW_ALL_COOKIES && type <= BLOCK_ALL_COOKIES;
+  }
+
+  static Type FromInt(int32 type) {
+    return static_cast<Type>(type);
+  }
+
+  // Sets the current policy to enforce. This should be called when the user's
+  // preferences change.
+  void SetType(Type type) { type_ = type; }
+
+  CookiePolicy();
+
+ private:
+  Type type_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(CookiePolicy);
+};
+
+#endif // NET_BASE_COOKIE_POLICY_H__