GitLab

A couple of bounds calculations used bounds().x(). bounds() is
relative to the parent, where as these calculations are meant to be
relative to the tree. So, they shouldn't use bounds().x() and should
instead always be 0 based.

BUG=779983
TEST=none

Change-Id: I92ffd99c9c7caef25b06bb7bdf3c05bbae466775
Reviewed-on: https://chromium-review.googlesource.com/777768Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517897}