$ run-webkit-tests dom/xhtml/level2/html/HTMLIframeElement11.xhtml dom/xhtml/level2/html .ASSERTION FAILED: m_client->hasWebView() (/WebKit/WebCore/loader/FrameLoader.cpp:2877 checkLoadComplete) According to the buildbot, regressed in <trac.webkit.org/projects/webkit/changeset/21524>.
Can't reproduce with r21600. Alexey, can you confirm and close the bug?
AFAICT this was fixed by Maciej in r21543.