Register TF BoundedTensorSpec for json serialization.

PiperOrigin-RevId: 355925369
Change-Id: I5a9916dc4b9c88873a386f69e91be6828fe4b4ea
diff --git a/tensorflow/python/framework/tensor_spec.py b/tensorflow/python/framework/tensor_spec.py
index 68c2320..04ceff8 100644
--- a/tensorflow/python/framework/tensor_spec.py
+++ b/tensorflow/python/framework/tensor_spec.py
@@ -220,6 +220,7 @@
 
 
 # TODO(b/133606651): Should is_compatible_with should check min/max bounds?
+@type_spec.register("tf.BoundedTensorSpec")
 class BoundedTensorSpec(TensorSpec):
   """A `TensorSpec` that specifies minimum and maximum values.