message: [XLA] Redesign: add a constructor: XlaComputation(HloModuleProto).
diff: @@ -30,6 +30,8 @@ namespace xla {
  class XlaComputation {
  public:
  XlaComputation() : unique_id_(-1) {}
  + XlaComputation(const HloModuleProto& proto)
  + : unique_id_(proto.id()), proto_(proto) {}
  XlaComputation(const XlaComputation&) = delete;
  XlaComputation& operator=(const XlaComputation&) = delete;
  