message: [XLA] Fix xla_data.proto for protoc
  The "reserved" keyword doesn't work in enumerations, replace it with a comment.
diff: @@ -814,8 +814,7 @@ enum RandomDistribution {
  // parameter[0] and standard deviation parameter[1].
  RNG_NORMAL = 2;
  - reserved 3;
  - reserved "RNG_BERNOULLI";
  + // Next: 4
  }
  message RngRequest {
  