When we know that the imported JavaScript function, and we cannot
generate a direct call because the parameter count does not match, then
we can call directly to the ArgumentsAdaptor instead of the Call
builtin.

R=bmeurer@chromium.org

Change-Id: I72882c2edf170d88135d12352852302d56cc54a5
Reviewed-on: https://chromium-review.googlesource.com/986095Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52316}