tree 45f2a72cbd5bcc9d7f8155c78a53dfc6cfa6ab51
parent d90508759922650a71ef36f3cbc17f4edd891a20
author bnc <bnc@google.com> 1619547901 -0700
committer Copybara-Service <copybara-worker@google.com> 1619547951 -0700

Implement quiche::QuicheTextUtils::HexDump() within QUICHE.

The implementation is based on
https://source.chromium.org/chromium/chromium/src/+/master:net/base/hex_utils.cc;l=13-45;drc=43b334ad1641a94cb11dec0d8023be47b16a66c0
with some tweaks and using Abseil instead of Chromium's base.

Also move some other non-trivial QuicheTextUtils method definitions to .cc file,
and add empty test case for HexDump().

PiperOrigin-RevId: 370724763
Change-Id: I780f5ccc889929331d66538b555790c0789a4efa