This is a reland of f4c5bb9aba
Original change's description:
> Make GPU cache invalidation SkMessageBus messages go to one GrContext.
>
> Makes it so the template param to SkMessageBus must implement:
> bool shouldSend(uint32_t inboxID) const
>
> Updates all GPU backend message types to only go to the GrContext that
> is adding a cache entry.
>
> Bug: skia:
> Change-Id: I3e8a4eb90654b7b8ac57cac9fb508c0ef1d51058
> Reviewed-on: https://skia-review.googlesource.com/140220
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> Reviewed-by: Jim Van Verth <jvanverth@google.com>
Bug: skia:
Change-Id: I8402bfe3ed0170c99936d47050458817030b473b
Reviewed-on: https://skia-review.googlesource.com/140801
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
238069b3f5