Embedders should use Module::InstantiateModule

R=neis@chromium.org

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Iebd5beeeeb9ea7025c61b97b666827e0a6ec89ad
Reviewed-on: https://chromium-review.googlesource.com/519162Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45655}