compatibility with GPU delegate.

*   Extension Types

    *   Add experimental API to define new Python classes that can be handled by
        TensorFlow APIs. To create an extension type, simply define a Python
        class with `tf.experimental.ExtensionType` as its base, and use type
        annotations to specify the type for each field. E.g.: `python class

H3H V25 #define XH3 V26 #define XM3 V27 #define IN3 V28 #define H4L V29 #define H4 V30 #define H4H V31 #define IN0 IN #define H21L HL #define H21H HH #define LOPERM H2L #define HIPERM H2H #define VXL VS32 #define VIN VS35 #define VXC2 VS40 #define VH VS41 #define VHH VS42 #define VHL VS43 #define VIN1 VS48 #define VH2 VS49 #define VH2H VS50 #define VH2L VS51 #define VIN2 VS54 #define VH3L VS55 #define VH3 VS56 #define VH3H VS57 #define VIN3 VS60 #define VH4L VS61 #define VH4 VS62 #define VH4H VS63...