net: add basic ChannelID support to TLSLite.

In order to test some ChannelID functions, this change adds basic ChannelID
support to testserver and TLSLite. With this change, testserver can receive a
ChannelID and echo its hash on /channel-id.

This code doesn't check the ChannelID signature.

BUG=none
TBR=darin

Review URL: https://chromiumcodereview.appspot.com/12313068

git-svn-id: http://src.chromium.org/svn/trunk/src/third_party/tlslite@185744 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
6 files changed