When running `git svn dcommit`, we might end up incorporating a commit that was landed but not yet mirrored to GitHub. In order to get a pull request marked as "merged", our parent commits need to be correct canonicalized locally. Given that our hooks are usually pretty quick to canonicalize and push commits to GitHub, we should be able to get away with canonicalizing only the our first 2 parent commits.
<rdar://problem/91436607>
Pull request: https://github.com/WebKit/WebKit/pull/262
Committed r292573 (249411@main): <https://commits.webkit.org/249411@main> Reviewed commits have been landed. Closing PR #262 and removing active labels.