Unreviewed GTK gardening.

Generating missing baselines for an octet of media tests and removing related expectations.

* platform/gtk/TestExpectations: Also removing expectation for
fast/multicol/newmulticol/column-rules-fixed-height.html, the test is now passing.
* platform/gtk/media/audio-controls-rendering-expected.png: Added.
* platform/gtk/media/audio-controls-rendering-expected.txt: Added.
* platform/gtk/media/controls-after-reload-expected.png: Added.
* platform/gtk/media/controls-after-reload-expected.txt:
* platform/gtk/media/controls-strict-expected.png: Added.
* platform/gtk/media/controls-strict-expected.txt:
* platform/gtk/media/controls-styling-strict-expected.txt:
* platform/gtk/media/controls-without-preload-expected.png: Added.
* platform/gtk/media/controls-without-preload-expected.txt:
* platform/gtk/media/video-controls-rendering-expected.png:
* platform/gtk/media/video-controls-rendering-expected.txt:
* platform/gtk/media/video-display-toggle-expected.png: Added.
* platform/gtk/media/video-display-toggle-expected.txt:
* platform/gtk/media/video-playing-and-pause-expected.png: Added.
* platform/gtk/media/video-playing-and-pause-expected.txt:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@144284 268f45cc-cd09-0410-ab3c-d52691b4dbfc