Remember that we've white listed a certificate when we switch to a new tab....

chrome/browser/ssl/ssl_host_state.h

+// Copyright (c) 2006-2009 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_SSL_SSL_HOST_STATE_H_
+#define CHROME_BROWSER_SSL_SSL_HOST_STATE_H_
+
+#include <string>
+#include <map>
+#include <set>
+
+#include "base/basictypes.h"
+#include "base/non_thread_safe.h"
+#include "googleurl/src/gurl.h"
+#include "net/base/x509_certificate.h"
+
+// SSLHostState
+//
+// The SSLHostState encapulates the host-specific state for SSL errors.  For
+// example, SSLHostState rememebers whether the user has whitelisted a
+// particular broken cert for use with particular host.  We separate this state
+// from the SSLManager because this state is shared across many navigation
+// controllers.
+
+class SSLHostState : public NonThreadSafe {
+ public:
+  SSLHostState();
+  ~SSLHostState();
+
+  // Records that |cert| is permitted to be used for |host| in the future.
+  void DenyCertForHost(net::X509Certificate* cert, const std::string& host);
+
+  // Records that |cert| is not permitted to be used for |host| in the future.
+  void AllowCertForHost(net::X509Certificate* cert, const std::string& host);
+
+  // Queries whether |cert| is allowed or denied for |host|.
+  net::X509Certificate::Policy::Judgment QueryPolicy(
+      net::X509Certificate* cert, const std::string& host);
+
+  // Allow mixed/unsafe content to be visible (non filtered) for the specified
+  // URL.
+  // Note that the current implementation allows on a host name basis.
+  void AllowShowInsecureContentForURL(const GURL& url);
+
+  // Returns whether the specified URL is allowed to show insecure (mixed or
+  // unsafe) content.
+  bool CanShowInsecureContent(const GURL& url);
+
+ private:
+  // Certificate policies for each host.
+  std::map<std::string, net::X509Certificate::Policy> cert_policy_for_host_;
+
+  // Domains for which it is OK to show insecure content.
+  std::set<std::string> can_show_insecure_content_for_host_;
+
+  DISALLOW_COPY_AND_ASSIGN(SSLHostState);
+};
+
+#endif  // CHROME_BROWSER_SSL_SSL_HOST_STATE_H_