Unreviewed GTK gardening.

Changing a timeout expectation for inspector/timeline/timeline-decode-resize.html
to a failure expectation. The test doesn't time out anymore due to added WebP support.

Adding a timeout expectation for two proximity layout tests added in r139050.

* platform/gtk/TestExpectations:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@139056 268f45cc-cd09-0410-ab3c-d52691b4dbfc