[tools] Merge ChangeLog from latest release

This is to make the diffs on rolls and releases smaller.

NOTRY=true

Change-Id: I3fb837a70e7b5be0f9d5b5b7ea6318d6a22ebd32
Reviewed-on: https://chromium-review.googlesource.com/832464Reviewed-by: Michael Hablich <hablich@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50195}