Cocoa code in WebKit/Source/Platform is not available in C++ unit tests
<rdar://problem/98715202>
Pull request: https://github.com/WebKit/WebKit/pull/3359
Committed 253671@main (154ff0da5bbd): <https://commits.webkit.org/253671@main> Reviewed commits have been landed. Closing PR #3359 and removing active labels.
Re-opened since this is blocked by bug 244267
Reverted in https://commits.webkit.org/253699@main because it broke builds with PGO.
Pull request: https://github.com/WebKit/WebKit/pull/3644
Committed 253808@main (88d1b92d0f9f): <https://commits.webkit.org/253808@main> Reviewed commits have been landed. Closing PR #3644 and removing active labels.