Make GrGLInterface great for Win32 x86 again

Cherry pick to m67

No-Tree-Checks: true
No-Try: true
No-Presubmit: true
Bug: skia:8262
Change-Id: I607644198d5dc7992e2b89eb34651eb1dc88c6ba
Reviewed-On: https://skia-review.googlesource.com/149225
Reviewed-By: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-on: https://skia-review.googlesource.com/150141
Reviewed-by: Brian Salomon <bsalomon@google.com>