Add the fma() builtin function to ESSL. Bug: angleproject:3569 Change-Id: Ic8419b4c117ecdd8b47aa733bf7aff9ee7579bbf Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1954484Reviewed-by:Jiajia Qin <jiajia.qin@intel.com> Reviewed-by:
Cody Northrop <cnorthrop@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>