According to the Westwood-Century City Patch, replacements for the trees removed from Westwood for sidewalk improvements are now being replanted.
Apparently, the new trees will be in box-like containers to prevent the roots from upending sidewalk elements.
The box-like containers are described in a newsletter of the Westwood Village Improvement Assn. (of which UCLA is a member). See:
While we’re waiting for the new trees: