Prior to the introduction of find.py, GMs were liked in the order they
were listed in the gypi file, which was generally alphabetically. This
made it fairly easy to predict where slides would show up in SampleApp
and the order was consistent. This simply sorts the list of files in
find.py to restore the expectation that files should be listed in the
build in alphabetical order.
Review URL: https://codereview.chromium.org/1144973003
