google/closure-compiler — pull request #725 by creative-monkey (2014-12-02 07:32:17+00:00)
Title: Added StereoPannerNode to the Web Audio externs.

This interface is already available in Canary.
http://webaudio.github.io/web-audio-api/#the-stereopannernode-interface

@MatrixFrog - The CLA has been updated as requested.