r236846, bug #224786 for WPE imposes a dependency on OpenGL ES 3. This isn't viable because the minimum is set at OpenGL ES 2, and furthermore because libepoxy is used, making it irrelevant what version of OpenGL ES drivers the library is being built against.
Created attachment 432034 [details] Patch
Committed r279222 (239108@main): <https://commits.webkit.org/239108@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 432034 [details].