message: Update protobuf dependency to 3.5.0.
diff: @@ -50,13 +50,10 @@ REPOSITORY_LOCATIONS = dict(
  commit = "43863938377a9ea1399c0596269e0890b5c5515a",
  remote = "https://github.com/google/googletest",
  ),
  - # TODO(htuch): Protobuf can switch back to a point release http_archive at the next
  - # release (> 3.4.1), we need HEAD proto_library support and
  - # https://github.com/google/protobuf/pull/3761.
  com_google_protobuf = dict(
  - sha256 = "5d4551193416861cb81c3bc0a428f22a6878148c57c31fb6f8f2aa4cf27ff635",
  - strip_prefix = "protobuf-c4f59dcc5c13debc572154c8f636b8a9361aacde",
  - urls = ["https://github.com/google/protobuf/archive/c4f59dcc5c13debc572154c8f636b8a9361aacde.tar.gz"],
  + sha256 = "0cc6607e2daa675101e9b7398a436f09167dffb8ca0489b0307ff7260498c13c",
  + strip_prefix = "protobuf-3.5.0",
  + urls = ["https://github.com/google/protobuf/archive/v3.5.0.tar.gz"],
  ),
  envoy_api = dict(
  commit = "ae685c66fcb47a49b2b3d6ef41881b1ef664fbb5",
  