Do not create pending NavigationEntry when a transient one is present.

chrome/chrome_tests.gypi

 # Copyright 2013 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.
 {
   'variables': {
     'build_angle_deqp_tests%': 0,
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
@@ skipping 66 matching lines @@
       'browser/browsing_data/browsing_data_local_storage_helper_browsertest.cc',
       'browser/browsing_data/browsing_data_remover_browsertest.cc',
       'browser/browsing_data/browsing_data_remover_test_util.cc',
       'browser/browsing_data/browsing_data_remover_test_util.h',
       'browser/browsing_data/cache_counter_browsertest.cc',
       'browser/browsing_data/history_counter_browsertest.cc',
       'browser/browsing_data/passwords_counter_browsertest.cc',
       'browser/chrome_browser_main_mac_browsertest.mm',
       'browser/chrome_content_browser_client_browsertest.cc',
       'browser/chrome_main_browsertest.cc',
+      'browser/chrome_navigation_browsertest.cc',
       'browser/chrome_plugin_browsertest.cc',
       'browser/chrome_security_exploit_browsertest.cc',
       'browser/chrome_service_worker_browsertest.cc',
       'browser/chrome_site_per_process_browsertest.cc',
       'browser/chrome_switches_browsertest.cc',
       'browser/collected_cookies_browsertest.cc',
       'browser/content_settings/content_settings_browsertest.cc',
       'browser/crash_recovery_browsertest.cc',
       'browser/custom_handlers/protocol_handler_registry_browsertest.cc',
       'browser/data_saver/data_saver_browsertest.cc',
@@ skipping 3484 matching lines @@
             'browser',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
           ],
         }]
     }],
   ],  # 'conditions'
 }