Suppress layout test for Skia roll

Bug: 903289
Change-Id: Ibc84f1083d0cb121435418fcda226b16917d1b87
Reviewed-on: https://chromium-review.googlesource.com/c/1327223
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606571}

third_party/WebKit/LayoutTests/TestExpectations

@@ -4447,6 +4447,8 @@ crbug.com/757165 [ Win ] virtual/gpu/fast/canvas/canvas-strokeRect-alpha-shadow.
 crbug.com/757165 [ Win ] virtual/gpu/fast/canvas/image-object-in-canvas.html [ Skip ]
 
 crbug.com/766129 svg/wicd/test-rightsizing-b.xhtml [ Failure Pass ]
+#TODO(michaelludwig) 11/08/18, remove after Skia roll
+crbug.com/903289 svg/custom/radial-gradient-negative-radius.html [ Failure Pass ]
 
 # Antialiasing error
 crbug.com/845973 virtual/display-compositor-pixel-dump/fast/canvas/display-compositor-pixel-dump/OffscreenCanvas-opaque-background-compositing.html  [ Pass Failure ]