crosswalk-project/crosswalk — pull request #2121 by tmpsantos (2014-06-24 16:13:13+00:00)
Title: [Extensions]: Expose the extension path to the extension

There is an use case, specially with pycrosswalk, where you can have
multiple instances of the same extension loaded using symbolic links.

The extension needs to know about itself (the path to be more precise)
to figure out what python script it should load.