When loading SwiftShader on Mac, look in "Libraries" If ANGLE is statically linked into Chrome, SwiftShader's dylibs will be in the Libraries folder. Search in both the current module directory and the Libraries folder to handle both cases. Bug: chromium:1445969 Change-Id: I1d6ca3bb7b77fe0c23cb932c95f22f1754eaf9e5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4538366 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>