[Sync] Log age of auth tokens on authentication failure

sync/test/engine/mock_connection_manager.cc

 // 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.
 //
 // Mock ServerConnectionManager class for use in client regression tests.
 
 #include "sync/test/engine/mock_connection_manager.h"
 
 #include <map>
 
@@ skipping 37 matching lines @@
       mid_commit_observer_(NULL),
       throttling_(false),
       fail_with_auth_invalid_(false),
       fail_non_periodic_get_updates_(false),
       gu_client_command_(NULL),
       commit_client_command_(NULL),
       next_position_in_parent_(2),
       use_legacy_bookmarks_protocol_(false),
       num_get_updates_requests_(0) {
   SetNewTimestamp(0);
-  set_auth_token(kValidAuthToken);
+  SetAuthToken(kValidAuthToken, base::Time());
 }
 
 MockConnectionManager::~MockConnectionManager() {
   EXPECT_TRUE(update_queue_.empty()) << "Unfetched updates.";
 }
 
 void MockConnectionManager::SetCommitTimeRename(string prepend) {
   commit_time_rename_prepended_string_ = prepend;
 }
 
@@ skipping 661 matching lines @@
 
 void MockConnectionManager::UpdateConnectionStatus() {
   if (!server_reachable_) {
     server_status_ = HttpResponse::CONNECTION_UNAVAILABLE;
   } else {
     server_status_ = HttpResponse::SERVER_CONNECTION_OK;
   }
 }
 
 }  // namespace syncer