WebCoreTestSupport.h should put export macros to the left of function declarations.
<rdar://problem/115810109>
Pull request: https://github.com/WebKit/WebKit/pull/17995
Committed 268231@main (3734d250efe4): <https://commits.webkit.org/268231@main> Reviewed commits have been landed. Closing PR #17995 and removing active labels.