[Sessions] Add detailed logging of SessionRestore events.

chrome/chrome_tests_unit.gypi

 # Copyright 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.
 {
   'variables': {
     'chrome_unit_tests_sources': [
       '../components/autofill/content/renderer/test_password_autofill_agent.cc',
       '../components/autofill/content/renderer/test_password_autofill_agent.h',
       '../components/autofill/content/renderer/test_password_generation_agent.cc',
       '../components/autofill/content/renderer/test_password_generation_agent.h',
@@ skipping 1080 matching lines @@
       'service/cloud_print/printer_job_queue_handler_unittest.cc',
       'service/service_process_prefs_unittest.cc',
       'service/service_process_unittest.cc',
     ],
     'chrome_unit_tests_captive_portal_sources': [
       'browser/captive_portal/captive_portal_service_unittest.cc',
       'browser/captive_portal/captive_portal_tab_helper_unittest.cc',
       'browser/captive_portal/captive_portal_tab_reloader_unittest.cc',
     ],
     'chrome_unit_tests_session_service_sources': [
+      'browser/sessions/session_restore_stats_collector_unittest.cc',
       'browser/sessions/session_service_unittest.cc',
       'browser/ui/startup/session_crashed_infobar_delegate_unittest.cc',
     ],
     'chrome_unit_tests_webrtc_sources': [
       'browser/media/webrtc_log_uploader_unittest.cc',
       'browser/media/webrtc_log_util_unittest.cc',
       'browser/media/webrtc_rtp_dump_handler_unittest.cc',
       'browser/media/webrtc_rtp_dump_writer_unittest.cc',
       'renderer/media/chrome_webrtc_log_message_delegate_unittest.cc',
     ],
@@ skipping 1748 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }