Merge pull request dotnet/corefx#30917 from keeratsingh/utf8-feature-extension
authorKeerat Singh <v-kesin@microsoft.com>
Mon, 16 Jul 2018 17:11:37 +0000 (10:11 -0700)
committerGitHub <noreply@github.com>
Mon, 16 Jul 2018 17:11:37 +0000 (10:11 -0700)
Add support for UTF8 Feature Extension

Commit migrated from https://github.com/dotnet/corefx/commit/06b5dab217d1c00633f6ffad1d00e79669c95a8b


Trivial merge