AW docs: steps for net debugging

No change to logic, only docs.

This adds public docs for WebView's netlog support. This is mostly a
copy of http://go/clank-webview/net-debugging, but with modifications
for formatting and to call out particular content.

Bug: 918221
Test: Upload to gerrit > open file > click "gitiles"
Change-Id: I4f140ff6bdefb7a7bc740d7659513b58a43477f1
Reviewed-on: https://chromium-review.googlesource.com/c/1455681
Reviewed-by: Matt Menke <mmenke@chromium.org>
Reviewed-by: Tobias Sargeant <tobiasjs@chromium.org>
Commit-Queue: Nate Fischer <ntfschr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630997}
1 file changed