commit 1b524d48b132c4fa6b1d858c886010c8182d0e6b
author Robert Sesek <rsesek@chromium.org> Mon Mar 11 22:31:07 2019
committer Commit Bot <commit-bot@chromium.org> Mon Mar 11 22:31:07 2019
tree 94dca5473f59f8c0186478dd853e3f17c84c586c
parent f2096d77f9b0762eae369337479af5831ad3fc73

Refactor mojo::Channel to support record-oriented implementations.

mojo::Channel is geared towards implementations that use stream-based
communication, so it provides an underlying buffer into which bytes can
be read, and then a way to notify it that a read is complete.

With an upcoming ChannelMac implementation, the underlying communication
primitive is record-oriented instead of stream-oriented, which makes
using Channel's buffer implementation difficult. This change makes
the buffer management optional, and it provides a new method to parse
and dispatch messages with an un-owned span of a buffer.

Bug: 932175
Change-Id: Ie02412d3cd5c2a2cf21151ac8e0fc5dd4b6d32c7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1512393
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Cr-Commit-Position: refs/heads/master@{#639676}