GitLab

Deletes PlatformChannelPair, NamedPlatformChannelPair, and
NamedPlatformHandle types from the EDK. These are superceded by
equivalent types in the public platform support API.

TBR=jcivelli@chromium.org

Bug: 753541
Change-Id: Ic1982aac93f0b6a78730497fc04dc44bb128cef0
Reviewed-on: https://chromium-review.googlesource.com/1109259
Commit-Queue: Ken Rockot <rockot@chromium.org>
Reviewed-by: Ken Rockot <rockot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569707}