The check to decide whether to use the given baseURL or about:blank is wrong there: String pendingAPIRequestURL = baseURL.isEmpty() ? baseURL : ASCIILiteral("about:blank"); It should be the opposite.
Created attachment 238296 [details] Patch Trivial fix
Comment on attachment 238296 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=238296&action=review > Source/WebKit2/UIProcess/WebPageProxy.cpp:795 > + m_pageLoadState.setPendingAPIRequestURL(transaction, !baseURL.isEmpty() ? baseURL : ASCIILiteral("about:blank")); Nice. Can this be tested?
Comment on attachment 238296 [details] Patch I see, it's tested in a patch for the bug blocked by this one.
Committed r173726: <http://trac.webkit.org/changeset/173726>