Don't force non-session only cookies to be session only cookies, instead delete on shutdown

chrome/browser/net/clear_on_exit_policy.h

+// 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.
+
+// A wrapper around quota::PersistentStoragePolicy used by the net storage
+// backends in chrome/browser/net to decide what to delete at shutdown.
+
+#ifndef CHROME_BROWSER_NET_CLEAR_ON_EXIT_POLICY_H_
+#define CHROME_BROWSER_NET_CLEAR_ON_EXIT_POLICY_H_
+#pragma once
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+
+namespace quota {
+class SpecialStoragePolicy;
+}
+
+class ClearOnExitPolicy : public base::RefCountedThreadSafe<ClearOnExitPolicy> {
+ public:
+  // |special_storage_policy| can be NULL, if no policy is to be applied.
+  // Otherwise, will keep a scoped_refptr to |special_storage_policy|
+  // throughout its lifetime.
+  explicit ClearOnExitPolicy(
+      quota::SpecialStoragePolicy* special_storage_policy);
+
+  // True if there are origins that should be cleared on exit.
+  bool HasClearOnExitOrigins();
+
+  // True if the given origin (defined by the |domain| and whether or not the
+  // |scheme_is_secure|) should be cleared on exit.
+  bool ShouldClearOriginOnExit(const std::string& domain,
+                               bool scheme_is_secure);
+
+ private:
+  friend class base::RefCountedThreadSafe<ClearOnExitPolicy>;
+
+  virtual ~ClearOnExitPolicy();
+
+  scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy_;
+
+  DISALLOW_COPY_AND_ASSIGN(ClearOnExitPolicy);
+};
+
+#endif  // CHROME_BROWSER_NET_CLEAR_ON_EXIT_POLICY_H_