tree c16360868a22d7e260d3e41a135149077e0654fa
parent 1385d1b931fa4a466d6a9ea4e88c0f878189c78e
author Nick Maniscalco <maniscalco@google.com> 1521063776 -0700
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1521589287 +0000

[kernel] Add unit tests and comments for MBufChain

Add unit tests for MBufChain that make use of testable_user_ptr and
fake_user_ptr.

Add comments to MBufChain.

ZX-1846 #comment initial tests
ZX-1852 #comment prereq

Change-Id: I6626b5e05e56611006da3de0f8d7deae482fb474