Windows-specific cleanup opportunity.

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available.

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zmo: Is this something we still want to do? Assigning to you for triage.

It seems the situation is still there.
Maggie, can you evaluate the situation? It is a local cleanup request and may be good for code health.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b8f360001c28e2065717f7fa72e2d722a4b31ed1

commit b8f360001c28e2065717f7fa72e2d722a4b31ed1
Author: Maggie Chen <magchen@chromium.org>
Date: Wed Dec 12 01:48:13 2018

Reconcile the multiple GLImageDXGI types

(1) Merge GLImageDXGIHandle into GLImageDXGI. For those three override functions
BindTexImage(), GetInternalFormat() and ReleaseTexImage(), Check handle_
before continuing processing handle related code.
Rename GLImageDXGIHandle::Initialize() to GLImageDXGI::InitializeHandle()

(2) Merge GLImageDXGIBase into GLImageDXGI.

Bug:776010

Change-Id: Id2906a4fcb19e4286c13f718ae1913e73994d303
Reviewed-on: https://chromium-review.googlesource.com/c/1361588
Commit-Queue: Maggie Chen <magchen@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615770}
[modify] https://crrev.com/b8f360001c28e2065717f7fa72e2d722a4b31ed1/gpu/ipc/service/direct_composition_surface_win.cc
[modify] https://crrev.com/b8f360001c28e2065717f7fa72e2d722a4b31ed1/gpu/ipc/service/direct_composition_surface_win_unittest.cc
[modify] https://crrev.com/b8f360001c28e2065717f7fa72e2d722a4b31ed1/gpu/ipc/service/gpu_memory_buffer_factory_dxgi.cc
[modify] https://crrev.com/b8f360001c28e2065717f7fa72e2d722a4b31ed1/ui/gl/gl_image_dxgi.cc
[modify] https://crrev.com/b8f360001c28e2065717f7fa72e2d722a4b31ed1/ui/gl/gl_image_dxgi.h
[modify] https://crrev.com/b8f360001c28e2065717f7fa72e2d722a4b31ed1/ui/gl/gl_image_dxgi_unittest.cc

Thanks Maggie for cleaning this up!