I tried to run tools/gen_keyboard_overlay_data/gen_keyboard_overlay_data.py
 and got the following error.

Traceback (most recent call last):
  File "gen_keyboard_overlay_data.py", line 33, in <module>
    import gdata.spreadsheet.service
ImportError: No module named gdata.spreadsheet.service

I assume there's some gdata library I need to install, but that script has no OWNERS file and no documentation on how to run it or, more importantly, where the spreadsheet to update is and who has access to it.

Could someone with access to the script update the documentation and also remove the backspace shortcuts that are deleted in 
https://codereview.chromium.org/2865793002/?