Revert "Don't build GL on Metal, Vulkan, Dawn, Direct3D bots"

This reverts commit f6784a8c8439ebde2086f801ac76ce5a960d4fe9.

Reason for revert: breakage of builds

Original change's description:
> Don't build GL on Metal, Vulkan, Dawn, Direct3D bots
> 
> Misc fixes to omit GL-dependent targets and fix assumptions that
> SK_SUPPORT_GPU implies SK_GL.
> 
> Bug: skia:10051
> Change-Id: Ida88ac3f1bf4d9e23f66d0700c2bce18b938ed6f
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/277456
> Commit-Queue: Brian Salomon <bsalomon@google.com>
> Reviewed-by: Greg Daniel <egdaniel@google.com>

TBR=egdaniel@google.com,jvanverth@google.com,bsalomon@google.com

Change-Id: I4e02f675fd8820ed3c8efee192c64e570a23c3e5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:10051
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/277601
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
29 files changed