This flushed out a number of bugs.

To reproduce, remove the inspector.status file entries, build with GN,
and run `tools/run-tests.py --gn --exhaustive-variants inspector`.

R=mstarzinger@chromium.org
BUG=v8:6165,v8:6166,v8:6167,v8:6168,v8:6170,v8:6171

Review-Url: https://codereview.chromium.org/2777413005
Cr-Commit-Position: refs/heads/master@{#44242}