Correcting TestExpectations for Issue 2336693002.

BUG=646880

Review-Url: https://codereview.chromium.org/2340783002
Cr-Commit-Position: refs/heads/master@{#419273}

third_party/WebKit/LayoutTests/TestExpectations

@@ -1257,9 +1257,9 @@ crbug.com/490015 virtual/stable/http/tests/navigation/same-and-different-back.ht
 crbug.com/626703 [ Win10 ] imported/csswg-test/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-baseline-align-self-baseline-vert-001.html [ Failure ]
 
 # Skip the test for drawing text on canvases with no browsing context on Mac.
-# The feature works on Mac, but the default behavior must be determined as Mac does not use sans-serif 10 px as default font.
-crbug.com/646598 [ Mac ] virtual/display_list_2d_canvas/fast/canvas/text-rendering-frameless-canvas.html [ Skip ]
-crbug.com/646598 virtual/gpu/fast/canvas/text-rendering-frameless-canvas.html [ Skip ]
-crbug.com/646598 fast/canvas/text-rendering-frameless-canvas.html [ Skip ]
+# The feature works on Mac, but the layout tests fail as Mac does not use sans-serif 10 px as default font.
+crbug.com/646598 [ Mac ] virtual/display_list_2d_canvas/fast/canvas/text-rendering-frameless-canvas.html [ Failure ]
+crbug.com/646598 [ Mac ] virtual/gpu/fast/canvas/text-rendering-frameless-canvas.html [ Failure ]
+crbug.com/646598 [ Mac ] fast/canvas/text-rendering-frameless-canvas.html [ Failure ]
 
 crbug.com/492785 virtual/rootlayerscrolls/scrollbars/custom-scrollbar-reconstruction-on-inserting-style-sheet.html [ Failure ]