Fix usage of super in js perf test
Fix usage of super in js perf test

BUG=none
LOG=N
R=adamk@chromium.org, adamk, dslomov@chromium.org

Review URL: https://codereview.chromium.org/916573002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26558}

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh