Make sure we clear registerProtocolHandler settings on page navigation.

chrome/browser/content_settings/tab_specific_content_settings.cc

 // 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.
 
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 
 #include <list>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 691 matching lines @@
   if (!is_main_frame)
     return;
 
   // If we're displaying a network error page do not reset the content
   // settings delegate's cookies so the user has a chance to modify cookie
   // settings.
   if (!is_error_page)
     ClearCookieSpecificContentSettings();
   ClearGeolocationContentSettings();
   ClearMIDIContentSettings();
+  ClearPendingProtocolHandler();
 }
 
 void TabSpecificContentSettings::AppCacheAccessed(const GURL& manifest_url,
                                                   bool blocked_by_policy) {
   if (blocked_by_policy) {
     blocked_local_shared_objects_.appcaches()->AddAppCache(manifest_url);
     OnContentBlocked(CONTENT_SETTINGS_TYPE_COOKIES, std::string());
   } else {
     allowed_local_shared_objects_.appcaches()->AddAppCache(manifest_url);
     OnContentAllowed(CONTENT_SETTINGS_TYPE_COOKIES);
@@ skipping 31 matching lines @@
 }
 
 void TabSpecificContentSettings::RemoveSiteDataObserver(
     SiteDataObserver* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
 void TabSpecificContentSettings::NotifySiteDataObservers() {
   FOR_EACH_OBSERVER(SiteDataObserver, observer_list_, OnSiteDataAccessed());
 }