This is too difficult to implement without mocking new/delete.

BUG=angleproject:875

Change-Id: I7cdafe11d26939f14a43bc515454dd5cf70c4a2a
Reviewed-on: https://chromium-review.googlesource.com/769849
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>