[Chromium] Disabling WebFrameTest.DisambiguationPopupMobileSite because WebFrameTest is still failing after r141073.

Unreviewed. Gardening.

* tests/WebFrameTest.cpp:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141081 268f45cc-cd09-0410-ab3c-d52691b4dbfc