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diff --git a/chrome/browser/cert_store.h b/chrome/browser/cert_store.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 CHROME_BROWSER_CERT_STORE_H__
+#define CHROME_BROWSER_CERT_STORE_H__
+
+#include <vector>
+#include <map>
+
+#include "base/lock.h"
+#include "chrome/browser/render_process_host.h"
+#include "chrome/common/notification_service.h"
+#include "net/base/x509_certificate.h"
+
+// The purpose of the cert store is to provide an easy way to store/retrieve
+// X509Certificate objects.  When stored, an X509Certificate object is
+// associated with a RenderProcessHost.  If all the RenderProcessHosts
+// associated with the cert have exited, the cert is removed from the store.
+// This class is used by the SSLManager to keep track of the certs associated
+// to loaded resources.
+// It can be accessed from the UI and IO threads (it is thread-safe).
+// Note that the cert ids will overflow if we register more than 2^32 - 1 certs
+// in 1 browsing session (which is highly unlikely to happen).
+
+class CertStore : public NotificationObserver {
+ public:
+  // Creates the singleton instance.  Should be called from the UI thread.
+  static void Initialize();
+
+  // Returns the singleton instance of the CertStore.
+  static CertStore* GetSharedInstance();
+
+  // Stores the specified cert and returns the id associated with it.  The cert
+  // is associated to the specified RenderProcessHost.
+  // When all the RenderProcessHosts associated with a cert have exited, the
+  // cert is removed from the store.
+  // Note: ids starts at 1.
+  int StoreCert(X509Certificate* cert, int render_process_host_id);
+
+  // Retrieves the previously stored cert associated with the specified
+  // |cert_id| and set it in |cert|.  Returns false if no cert was found for
+  // that id.
+  bool RetrieveCert(int cert_id, scoped_refptr<X509Certificate>* cert);
+
+  // NotificationObserver implementation.
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+ private:
+  CertStore();
+  ~CertStore();
+
+  // Remove the specified cert from id_to_cert_ and cert_to_id_.
+  void RemoveCert(int cert_id);
+
+  // Removes all the certs associated with the specified process from the store.
+  void RemoveCertsForRenderProcesHost(int render_process_host_id);
+
+  static CertStore* instance_;
+
+  typedef std::multimap<int, int> IDMap;
+  typedef std::map<int, scoped_refptr<X509Certificate>> CertMap;
+  typedef std::map<X509Certificate*, int, X509Certificate::LessThan>
+      ReverseCertMap;
+
+  IDMap process_id_to_cert_id_;
+  IDMap cert_id_to_process_id_;
+
+  CertMap id_to_cert_;
+  ReverseCertMap cert_to_id_;
+
+  int next_cert_id_;
+
+  // This lock protects: process_to_ids_, id_to_processes_, id_to_cert_ and
+  //                     cert_to_id_.
+  Lock cert_lock_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(CertStore);
+};
+
+#endif  // CHROME_BROWSER_CERT_STORE_H__