promoted and semi_space_copied are still int type, so it is needed to use V8PRIdPTR
as their printf format specifier.

R=mlippautz@chromium.org, ulan@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2415183003
Cr-Commit-Position: refs/heads/master@{#40317}