REGRESSION (r138962): Fails to show "confirm form resubmission", hangs browser
https://bugs.webkit.org/show_bug.cgi?id=108214

Reviewed by Adam Barth.

Attempt a workaround suggested by Nate Chapin by putting some code
in #ifdef !PLATFORM(CHROMIUM).

* loader/MainResourceLoader.cpp:
(WebCore::MainResourceLoader::notifyFinished):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141462 268f45cc-cd09-0410-ab3c-d52691b4dbfc