Google Chrome 4.0.249.4 Beta

# All Platforms

* Fixed - Issue 27897: [Extension] Some extensions crash after installing 4.0.249.0
* Fixed - Issue 27900: [Extension] Reload on crash infobar causes more crashes

# Windows

* Fixed top windows crasher. (Issues: 27856, 28096)
* Fixed a crashing race condition in bookmark synchronization. (Issue: 23251)
* Make the character encoding indicator visible again on Windows. (Issue: 26438)

# Extensions

* Tab traversal in popups fixed on Windows, also a few other focus-related bugs. (Issues: 22654, 28086, 28087)