Unreviewed GTK gardening.

Rebaselining a few media tests after r140339.

* platform/gtk/fast/hidpi/video-controls-in-hidpi-expected.txt:
* platform/gtk/fast/layers/video-layer-expected.txt:
* platform/gtk/media/media-controls-clone-expected.txt:
* platform/gtk/media/video-empty-source-expected.txt:
* platform/gtk/media/video-no-audio-expected.txt:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140355 268f45cc-cd09-0410-ab3c-d52691b4dbfc