tree ed2424f8b2b456b9da6738edaddcbc40a350241f
parent a761e32bf952bf765cfa00acb56df17db7232417
author Wyatt Hepler <hepler@google.com> 1591852947 -0700
committer Wyatt Hepler <hepler@google.com> 1592327532 -0700

pw_containers: IntrusiveList updates

- Use an Item for List::head_ and have end() be &head_ instead of
  nullptr. This makes it possible to detect if an item is already in a
  list. Previously, checking nullptr was insufficient becuase the last
  item in the list pointed to nullptr. This approach also greatly
  simplifies the logic for adding and removing items.
- Add a destructor that calls clear().
- Allow constructing and assigning from iterators and initializer lists,
  and delete the copy constructor.
- Add erase_after and remove, which removes a specific item.
- Expand tests.

Change-Id: I392cdeca31e6dca5b3d29542d79636cfd996ca87