code_coverage: fuzzilli: run all JS testcases separately

This is necessary because `d8` runs the test cases in the same JS
namespace. This means that if identifiers are shared in between those,
we'll fail with errors such as TypeError.

Change-Id: Ide287027c278f9b4d986fa885d47969c8fe41df2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6449806
Commit-Queue: Paul Semel <[email protected]>
Reviewed-by: Ali Hijazi <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1446424}
NOKEYCHECK=True
GitOrigin-RevId: b9e0508865db219977ed75521e7d8abe54ec014e
1 file changed