Version 3.30.23 (based on 4a679c828899ac37630b1748caface5b816da87c)

Introduce v8::Exception::GetMessage to find location of an error object (Chromium issue 427954).

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/candidates@{#25034}
git-svn-id: https://v8.googlecode.com/svn/trunk@25034 ce2b1a6d-e550-0410-aec6-3dcde31c8c00