[//gpu] Make SIFactory wrapper over GMBFactory to create GMB handle

First step on replacing usage of GpuMemoryBufferFactory with usage of
SharedImageFactory and eliminating GpuMemoryBufferFactory.

Path from here is:

* Change GMBVideoFrameRendererPoolImpl flow to use the
  SharedImageFactory wrapper method (on the service side)
* Create the GMB factory internally in SharedImageFactory and remove it
  being passed around externally
* Decompose the GMB factory impls into impls of
  CreateNativeGpuMemoryBufferHandle() on SharedImageFactory

Bug: 404905709
Change-Id: I37016e28742ebc0a2a4bb01f22a9da7c11035cc6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6935477
Reviewed-by: Vasiliy Telezhnikov <vasilyt@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1514689}