Since frames.h no longer defines basic register types like RegList, it
is no longer necessary to include it in the macro assemblers.

Next step: split out frame-constants.h from frames.h so that it will be
possible to get frame constants without include the stackwalking logic,
which needs objects.h.

R=mstarzinger@chromium.org

Bug: 
Change-Id: Ia12d3c8a8d46a73106c3c90bcb4b470c85f1eaa7
Reviewed-on: https://chromium-review.googlesource.com/597788
Commit-Queue: Ben Titzer <titzer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47114}