Turns out I had commented out a few lines so the new "last line" ended with a comma. I corrected that and now it works fine.
Message loop: 'Google_recordset',
longitude: '' <------- errant comma was here...
// markerStyle: 'Push-Pin',
// markerColor: 'Pacifica'
The markerstyle and color don't appear to do anything so I left them commented out.
I am still puzzled as to where this code is called from:
as it is simply "thunked" into the page and is not a part of any method.