Add test expectation for one more test having color space issues after r156793.

(css3/filters/custom/custom-filter-composite-fractional-source-alpha.html)

* platform/mac-wk2/TestExpectations:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@156844 268f45cc-cd09-0410-ab3c-d52691b4dbfc

LayoutTests/ChangeLog

+2013-10-03  Tim Horton  <timothy_horton@apple.com>
+
+        Add test expectation for one more test having color space issues after r156793.
+        (css3/filters/custom/custom-filter-composite-fractional-source-alpha.html)
+
+        * platform/mac-wk2/TestExpectations:
+
 2013-10-03  Alexey Proskuryakov  <ap@apple.com>
         Layout Test media/click-volume-bar-not-pausing.html is flaky

LayoutTests/platform/mac-wk2/TestExpectations

@@ -379,6 +379,7 @@ webkit.org/b/122234 css3/filters/custom/custom-filter-u-texture-size.html [ Imag
 webkit.org/b/122234 css3/filters/custom/custom-filter-u-tile-size.html [ ImageOnlyFailure ]
 webkit.org/b/122234 css3/filters/custom/custom-filter-unavailable-varying.html [ ImageOnlyFailure ]
 webkit.org/b/122234 css3/filters/custom/custom-filter-clamp-css-color-matrix.html [ ImageOnlyFailure ]
+webkit.org/b/122234 css3/filters/custom/custom-filter-composite-fractional-source-alpha.html [ ImageOnlyFailure ]
 
 # Tiled background images that intersect the tiles are getting weird fringing.
 webkit.org/b/122235 css3/masking/mask-repeat-space-border.html [ ImageOnlyFailure ]