arc: net: Cleanup and improve documentation in net.mojom

This patch improves documentation inside net.mojom and removes
removes an obsolete struct definition.

BUG=b:127788056
TEST=Compiled.

Reviewed-on: https://googleplex-android-review.git.corp.google.com/c/platform/vendor/google_arc/+/6665926
Reviewed-on: https://googleplex-android-review.git.corp.google.com/c/platform/vendor/google_arc/+/6701767
Change-Id: Ia46234a3065135cfc15af769ee280841a188df9c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1515152
Commit-Queue: Hugo Benichi <hugobenichi@google.com>
Auto-Submit: Hugo Benichi <hugobenichi@google.com>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#641200}
1 file changed