worker: Fix import for protobuf package.
worker: Fix import for protobuf package.

vitessio/vitess,rnavarro/vitess,erzel/vitess,sougou/vitess,mattharden/vitess,HubSpot/vitess,erzel/vitess,mattharden/vitess,mattharden/vitess,mapbased/vitess,pivanof/vitess,rnavarro/vitess,applift/vitess,pivanof/vitess,vitessio/vitess,HubSpot/vitess,sougou/vitess,HubSpot/vitess,applift/vitess,tirsen/vitess,davygeek/vitess,rnavarro/vitess,mattharden/vitess,tirsen/vitess,alainjobart/vitess,rnavarro/vitess,davygeek/vitess,mattharden/vitess,mapbased/vitess,sougou/vitess,dcadevil/vitess,dumbunny/vitess,dumbunny/vitess,dcadevil/vitess,tirsen/vitess,pivanof/vitess,dumbunny/vitess,applift/vitess,pivanof/vitess,dumbunny/vitess,enisoc/vitess,tirsen/vitess,applift/vitess,sougou/vitess,HubSpot/vitess,mapbased/vitess,rnavarro/vitess,dumbunny/vitess,mapbased/vitess,alainjobart/vitess,tirsen/vitess,rnavarro/vitess,tinyspeck/vitess,vitessio/vitess,dcadevil/vitess,tirsen/vitess,mahak/vitess,alainjobart/vitess,dcadevil/vitess,dumbunny/vitess,alainjobart/vitess,davygeek/vitess,pivanof/vitess,pivanof/vitess,HubSpot/vitess,dumbunny/vitess,tinyspeck/vitess,erzel/vitess,tinyspeck/vitess,alainjobart/vitess,davygeek/vitess,enisoc/vitess,erzel/vitess,davygeek/vitess,pivanof/vitess,alainjobart/vitess,dcadevil/vitess,mahak/vitess,dcadevil/vitess,mapbased/vitess,mattharden/vitess,mapbased/vitess,tinyspeck/vitess,erzel/vitess,dumbunny/vitess,applift/vitess,vitessio/vitess,erzel/vitess,mapbased/vitess,sougou/vitess,tinyspeck/vitess,mattharden/vitess,pivanof/vitess,dumbunny/vitess,enisoc/vitess,applift/vitess,mahak/vitess,applift/vitess,sougou/vitess,mapbased/vitess,alainjobart/vitess,sougou/vitess,mahak/vitess,HubSpot/vitess,tirsen/vitess,enisoc/vitess,mattharden/vitess,vitessio/vitess,HubSpot/vitess,dumbunny/vitess,erzel/vitess,HubSpot/vitess,erzel/vitess,enisoc/vitess,mapbased/vitess,rnavarro/vitess,mattharden/vitess,alainjobart/vitess,dcadevil/vitess,davygeek/vitess,vitessio/vitess,mahak/vitess,vitessio/vitess,erzel/vitess,rnavarro/vitess,mahak/vitess,mahak/vitess,enisoc/vitess,applift/vitess,rnavarro/vitess,tinyspeck/vitess,tirsen/vitess,mapbased/vitess,applift/vitess,davygeek/vitess,enisoc/vitess,applift/vitess,vitessio/vitess,pivanof/vitess,mahak/vitess,mattharden/vitess,erzel/vitess,tinyspeck/vitess,sougou/vitess,tirsen/vitess