[milo] {buildbucket,buildbot,swarming,logdog} -> backends/*.

milo/appengine/job_source/buildbot/grpc.go

 // Copyright 2016 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package buildbot
 
 import (
         "bytes"
         "compress/gzip"
         "encoding/json"
@@ skipping 213 matching lines @@
 
         return &milo.CompressedMasterJSON{
                 Internal: entry.Internal,
                 Modified: &timestamp.Timestamp{
                         Seconds: entry.Modified.Unix(),
                         Nanos:   int32(entry.Modified.Nanosecond()),
                 },
                 Data: gzbs.Bytes(),
         }, nil
 }