Fix fast/repaint/obscured-background-no-repaint.html

third_party/WebKit/LayoutTests/TestExpectations

 # ====== Oilpan-only failures from here ======
 # Most of these actually cause the tests to report success, rather than
 # failure. Expected outputs will be adjusted for the better once Oilpan
 # has been well and truly enabled always.
 
 crbug.com/420008 inspector/tracing/worker-js-frames.html [ Pass Timeout Failure ]
 crbug.com/420008 virtual/threaded/inspector/tracing/worker-js-frames.html [ Pass Timeout Failure ]
 crbug.com/596940 inspector-protocol/runtime/runtime-execution-contexts-events.html [ Pass Timeout ]
 crbug.com/597572 [ Debug ] http/tests/inspector/resource-tree/resource-tree-reload.html [ Pass Failure ]
 
@@ skipping 310 matching lines @@
 crbug.com/492664 [ Linux ] imported/csswg-test/css-writing-modes-3/box-offsets-rel-pos-vrl-004.xht [ Failure ]
 crbug.com/492664 [ Mac ] imported/csswg-test/css-writing-modes-3/bidi-embed-002.html [ Failure ]
 crbug.com/492664 [ Mac ] imported/csswg-test/css-writing-modes-3/bidi-isolate-002.html [ Failure ]
 crbug.com/492664 [ Win ] imported/csswg-test/css-writing-modes-3/bidi-override-005.html [ Failure ]
 crbug.com/492664 [ Win ] imported/csswg-test/css-writing-modes-3/bidi-plaintext-001.html [ Failure ]
 
 crbug.com/267206 [ Mac ] virtual/rootlayerscrolls/fast/scrolling/scrollbar-tickmarks-hittest.html [ Timeout ]
 
 crbug.com/280342 [ Linux Win ] http/tests/media/progress-events-generated-correctly.html [ Failure ]
 
-crbug.com/636992 fast/repaint/obscured-background-no-repaint.html [ Failure ]
-
 crbug.com/520739 [ Mac ] http/tests/websocket/close-code-and-reason.html [ Failure Pass Timeout ]
 crbug.com/520737 [ Mac ] imported/csswg-test/css-writing-modes-3/writing-mode-vertical-rl-001.xht [ Failure Pass Timeout ]
 crbug.com/520736 [ Win7 ] media/W3C/video/networkState/networkState_during_progress.html [ Failure Pass ]
 
 crbug.com/522645 [ Linux ] virtual/android/fullscreen/video-fixed-background.html [ Failure Pass ]
 crbug.com/522647 http/tests/notifications/close-dispatch-asynchronous.html [ Failure Pass ]
 crbug.com/522648 fast/events/touch/compositor-touch-hit-rects-iframes.html [ Crash Failure Pass ]
 crbug.com/521858 [ Win7 ] http/tests/security/media-element-audio-source-node-same-origin.html [ Failure Pass ]
 crbug.com/521855 transitions/cancel-and-start-new.html [ Failure Pass ]
 crbug.com/521853 [ Win ] http/tests/inspector/search/sources-search-scope.html [ Failure Pass ]
@@ skipping 1079 matching lines @@
 crbug.com/636424 [ Win7 Debug ] editing/selection/modify_move/move-by-word-visually-crash-test-5.html [ Pass Timeout ]
 
 # This test breaks when the feature introduced in the bug is enabled. We keep
 # this tested without the feature by using the virtual test. See
 # virtual/stable/http/tests/navigation/beacon-cross-origin-redirect-blob-expected.txt
 crbug.com/490015 http/tests/navigation/beacon-cross-origin-redirect-blob.html [ Skip ]
 # This test doesn't need to be run with the stable release mode.
 crbug.com/490015 virtual/stable/http/tests/navigation/beacon-blob-with-non-simple-type.html [ Skip ]
 # This test fails with the stable release mode.
 crbug.com/490015 virtual/stable/http/tests/navigation/same-and-different-back.html [ Skip ]