Add tests for float32/float64 parameters/returns passed in float32/float64 registers.
Add tests for float32/float64 parameters/returns passed in float32/float64 registers.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1291553005

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#30143}

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