Reland r59641. Add the onBeforeNavigate and onErrorOccured events to the webNavigation API.

chrome/browser/tab_contents/provisional_load_details.cc

 // Copyright (c) 2006-2008 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/tab_contents/provisional_load_details.h"
 
 #include "chrome/browser/ssl/ssl_manager.h"
 
 ProvisionalLoadDetails::ProvisionalLoadDetails(bool is_main_frame,
                                                bool is_in_page_navigation,
                                                const GURL& url,
                                                const std::string& security_info,
                                                bool is_content_filtered)
       : error_code_(net::OK),
+        transition_type_(PageTransition::LINK),
         url_(url),
         is_main_frame_(is_main_frame),
         is_in_page_navigation_(is_in_page_navigation),
         ssl_cert_id_(0),
         ssl_cert_status_(0),
         ssl_security_bits_(-1),
         ssl_connection_status_(0),
         is_content_filtered_(is_content_filtered) {
   SSLManager::DeserializeSecurityInfo(security_info,
                                       &ssl_cert_id_,
                                       &ssl_cert_status_,
                                       &ssl_security_bits_,
                                       &ssl_connection_status_);
 }