message: [TF/XLA] Add tf_xla_disable_constant_folding flag.
diff: @@ -186,6 +186,10 @@ void AllocateAndParseFlags() {
  &build_ops_flags->tf_xla_check_cluster_output_numerics,
  "If true then insert CheckNumerics nodes to to check all cluster "
  "outputs."),
  + Flag("tf_xla_disable_constant_folding",
  + &build_ops_flags->tf_xla_disable_constant_folding,
  + "If true then disables constant folding on TF graph before XLA "
  + "compilation."),
  Flag("tf_xla_compile_on_demand", &device_flags->tf_xla_compile_on_demand,
  "Switch a device into 'on-demand' mode, where instead of "
  