DevTools: migrate off ASSERT in inspector protocol.

BUG=580337

Review-Url: https://codereview.chromium.org/2012523002
Cr-Original-Commit-Position: refs/heads/master@{#395953}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 3905c12981492102e63165a7b4e315dc6983922f
1 file changed