Eliminate compiling for the WebGL spec. Bug 19331817 Change-Id: I85cbfd61a267e39832b951121422a676f5af4a54 Reviewed-on: https://swiftshader-review.googlesource.com/2289 Reviewed-by: Nicolas Capens <capn@google.com> Tested-by: Nicolas Capens <capn@google.com>