This is analogous to GenericPendingReceiver but for associated
interfaces. It's needed for layering associated interfaces on
GpuChannel, but will also be useful for cleaning up legacy
Channel-associated interface support and for building whatever replaces
that in the future of browser-renderer IPC.
Bug: 1196476
Change-Id: I1380d1e47e3dc66c1364c82a938a7d30f4b4cf3d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2903727
Commit-Queue: Ken Rockot <rockot@google.com>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#889485}