Google updates Chrome beta of its Chrome browser for the Mac. The update adds support for extensions and bookmark sync to the Mac edition. Chrome also adds improved bookmark and cookie managers, a task manager for handling the browser’s tabs. The latest update is to version 5.0.307307.7; current Chrome users can wait for the automatic update, which should kick in within the next 24 hours. Yesterday, Google patched seven security vulnerabilities in the production edition of Chrome for the Windows version of the browser.”]