message: Add TfLiteOpaqueDelegate typedef to shims/c/common.h.
diff: @@ -17,4 +17,10 @@ limitations under the License.
  #include "tensorflow/lite/c/common.h"
  +// TfLiteOpaqueDelegate: allows delegation of nodes to alternative backends.
  +// TfLiteOpaqueDelegate is an abstract type that is intended to have the same
  +// role as TfLiteDelegate, but without necessarily exposing the implementation
  +// details of how delegates are implemented.
  +typedef TfLiteDelegate TfLiteOpaqueDelegate;
  +
  #endif // TENSORFLOW_LITE_CORE_SHIMS_C_COMMON_H_
  