Currently, whenever we send a SharedBuffer across IPC we allocate a new SharedMemory. We can reduce that memory usage by packing SharedBuffer content into the same SharedMemory where possible.
rdar://102201837
Pull request: https://github.com/WebKit/WebKit/pull/6780
Committed 256999@main (80bf5c2acfbc): <https://commits.webkit.org/256999@main> Reviewed commits have been landed. Closing PR #6780 and removing active labels.