This CL replaces usages of utils.InstallFunctions and utils.InstallGetter()
with utils.InstallConstants(). Since these methods are not exposed to the user it
doesn't matter if we add them with DONT_ENUM attributes or not.

This CL is one of a series of cleanup CL which are the preliminary steps for
improving function closures creation.

Bug: v8:6459
Change-Id: I41708741f1cc013e4f4c37f1c7a73c1333deca7d
Reviewed-on: https://chromium-review.googlesource.com/548137
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46288}