There were issues when landing https://bugs.webkit.org/show_bug.cgi?id=179385 which point to the generated WebPreferences getting stale. This should be resolved to allow WinCairo to build after changes to the preferences. ..\..\Source\WebKitLegacy\win\WebView.cpp(5246): error C2039: 'visualViewportAPIEnabled': is not a member of 'IWebPreferencesPrivate6' See https://build.webkit.org/builders/WinCairo%2064-Bit%20Release/builds/8578/steps/compile-webkit/logs/stdio
Looks like a similar issue with: Bug 173352 – [Win] WebKit shouldn't include the forwarding header of WebKit itself
Created attachment 327518 [details] Patch
Comment on attachment 327518 [details] Patch Clearing flags on attachment: 327518 Committed r225139: <https://trac.webkit.org/changeset/225139>
All reviewed patches have been landed. Closing bug.
<rdar://problem/35684422>