Revert "[//media] Add RenderableGMBVideoFramePool MultiplanarSI flow on Mac"

This reverts commit 60007e376cb8cd470a067102553bcef92445b231.

Reason for revert: Gold failures in https://crbug.com/1451025

Original change's description:
> [//media] Add RenderableGMBVideoFramePool MultiplanarSI flow on Mac
>
> This CL adds a flow to RenderableGMBVideoFramePool wherein it creates
> Multiplanar SharedImages on Mac. A few notes:
>
> * I tested the flow with Google Meet visual effects, which I confirmed
> (repeatedly :) were broken if the flow wasn't correct
> * I enabled the flow only on Mac at this time as I wasn't able to
> test on any other platform, and I don't know if further changes might
> be required on other platforms
> * I added the change to
> media/renderers/video_frame_rgba_to_yuva_converter.cc in response to
> a gpu-side DCHECK [1] going off in local testing.  It seems like it
> might need to be generalized in the future.
> * The only implementation of the new Context::CreateSI() method that
> is invoked in this flow is WebGraphicsContext3DVideoFramePool, but I
> filled in the others for completeness
>
> This patch is based on a prototype by hitawala@.
>
> [1] https://source.chromium.org/chromium/chromium/src/+/main:gpu/command_buffer/service/copy_shared_image_helper.cc;l=642-644?q=copy_shared_image&ss=chromium
>
> Change-Id: I57d1ea8a0b2b5c35ddee7468f48a199b06f46f5d
> Bug: 1429004
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4488909
> Reviewed-by: Kentaro Hara <haraken@chromium.org>
> Commit-Queue: Colin Blundell <blundell@chromium.org>
> Reviewed-by: Saifuddin Hitawala <hitawala@chromium.org>
> Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
> Reviewed-by: Vasiliy Telezhnikov <vasilyt@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1152495}

Bug: 1451025
Bug: 1429004
Change-Id: Ie61c35797a5102c315d9992fba98c2a932e5e1d0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4584419
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Owners-Override: Kai Ninomiya <kainino@google.com>
Cr-Commit-Position: refs/heads/main@{#1152827}

• components/viz/service/frame_sinks/gmb_video_frame_pool_context_provider_impl.cc[diff]
• media/renderers/video_frame_rgba_to_yuva_converter.cc[diff]
• media/video/renderable_gpu_memory_buffer_video_frame_pool.cc[diff]
• media/video/renderable_gpu_memory_buffer_video_frame_pool.h[diff]
• media/video/renderable_gpu_memory_buffer_video_frame_pool_unittest.cc[diff]
• third_party/blink/renderer/platform/graphics/web_graphics_context_3d_video_frame_pool.cc[diff]
• third_party/blink/renderer/platform/webrtc/webrtc_video_frame_adapter.cc[diff]