Missing bExact -> iExact conversions

This is the cause of the mac embeddertest failure when fx_bool is
replaced by bool (an incorrect overload).  The types still
match on master, prior to the conversion, so it's not noticed.

Find other instances as well.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1262683003 .
3 files changed