Utilities for ANGLE should be guarded by USE(ANGLE) not ENABLE(WEBGL).
<rdar://problem/98809413>
Pull request: https://github.com/WebKit/WebKit/pull/3435
Committed 253552@main (3fe4b72d1b53): <https://commits.webkit.org/253552@main> Reviewed commits have been landed. Closing PR #3435 and removing active labels.