Make some code gender neutral.

chrome/utility/importer/safari_importer.mm

 // 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 <Cocoa/Cocoa.h>
 
 #include "chrome/utility/importer/safari_importer.h"
 
 #include <map>
 #include <vector>
@@ skipping 276 matching lines @@
   // Recursively read in bookmarks.
   std::vector<base::string16> parent_path_elements;
   RecursiveReadBookmarksFolder(bookmarks_dict, parent_path_elements, false,
                                toolbar_name, bookmarks);
 }
 
 void SafariImporter::ImportPasswords() {
   // Safari stores it's passwords in the Keychain, same as us so we don't need
   // to import them.
   // Note: that we don't automatically pick them up, there is some logic around
-  // the user needing to explicitly input his username in a page and blurring
+  // the user needing to explicitly input their username in a page and blurring
   // the field before we pick it up, but the details of that are beyond the
   // scope of this comment.
 }
 
 void SafariImporter::ImportHistory() {
   std::vector<ImporterURLRow> rows;
   ParseHistoryItems(&rows);
 
   if (!rows.empty() && !cancelled()) {
     bridge_->SetHistoryItems(rows, importer::VISIT_SOURCE_SAFARI_IMPORTED);
@@ skipping 64 matching lines @@
     if (!last_visit_str)
       continue;
 
     // Convert Safari's last visit time to Unix Epoch time.
     double seconds_since_unix_epoch = HistoryTimeToEpochTime(last_visit_str);
     row.last_visit = base::Time::FromDoubleT(seconds_since_unix_epoch);
 
     history_items->push_back(row);
   }
 }