Grab a bunch of owners / todos.

Taking over some TODOs for noelallen and adding myself
to OWNERS files in a few places.

BUG=None
TEST=None
[email protected]

Review URL: https://codereview.chromium.org/875543002

Cr-Commit-Position: refs/heads/master@{#312909}
10 files changed