Fails compile on the Windows Debug GPU bot:

c:\b\build\slave\gpu_win_builder__dbg_\build\src\third_party\deqp\src\framework\opengl\simplereference\sglrreferencecontext.cpp(2342) : warning C4541: 'dynamic_cast' used on polymorphic type 'sglr::rc::Texture' with /GR-; unpredictable behavior may result
c:\b\build\slave\gpu_win_builder__dbg_\build\src\third_party\deqp\src\framework\opengl\simplereference\sglrreferencecontext.cpp(2344) : warning C4541: 'dynamic_cast' used on polymorphic type 'sglr::rc::Texture' with /GR-; unpredictable behavior may result

Many other similar errors.

BUG=angleproject:1239

This reverts commit aca86045.

Change-Id: I523e12b32665bcc74a6437582be82db8174e42ac
Reviewed-on: https://chromium-review.googlesource.com/315170Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>