Script streaming: Test that streaming <-> harmony scopes interaction is correct.
Script streaming: Test that streaming <-> harmony scopes interaction is correct.

BUG=

Review URL: https://codereview.chromium.org/871893002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26250}

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