OpenJDK 11: merge XEC key specs.

This is part of updating to openJDK 11, and will be used for Conscrypt. This adds new APIs that will be tested within the KeyAgreement.java tests when that is merged (soon).

Test: m
Change-Id: Iba9b8c8726031c36b41a6d97d3e5602f9bd7a8ff
4 files changed