(Original patch reviewed at http://codereview.chromium.org/2067003 )...

chrome_frame/chrome_active_document.cc

Index: chrome_frame/chrome_active_document.cc
===================================================================
--- chrome_frame/chrome_active_document.cc	(revision 47323)
+++ chrome_frame/chrome_active_document.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
@@ -642,8 +642,10 @@
   bool is_title_changed = (navigation_info_.title != new_navigation_info.title);
   bool is_ssl_state_changed =
       (navigation_info_.security_style != new_navigation_info.security_style) ||
-      (navigation_info_.has_mixed_content !=
-          new_navigation_info.has_mixed_content);
+      (navigation_info_.displayed_mixed_content !=
+          new_navigation_info.displayed_mixed_content) ||
+      (navigation_info_.ran_mixed_content !=
+          new_navigation_info.ran_mixed_content);
 
   if (is_ssl_state_changed) {
     int lock_status = SECURELOCK_SET_UNSECURE;
@@ -652,7 +654,7 @@
         lock_status = SECURELOCK_SET_SECUREUNKNOWNBIT;
         break;
       case SECURITY_STYLE_AUTHENTICATED:
-        lock_status = new_navigation_info.has_mixed_content ?
+        lock_status = new_navigation_info.displayed_mixed_content ?
             SECURELOCK_SET_MIXED : SECURELOCK_SET_SECUREUNKNOWNBIT;
         break;
       default: