Mark more virtual/threaded/transitions tests flaky

third_party/WebKit/LayoutTests/TestExpectations

Index: third_party/WebKit/LayoutTests/TestExpectations
diff --git a/third_party/WebKit/LayoutTests/TestExpectations b/third_party/WebKit/LayoutTests/TestExpectations
index a821cb3b9538f0c4f7e789fea1ee8c3f0a8a134c..62ee05a89cb82fc371ce0c5f1bb3ffd8ef5d7d0f 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -239,6 +239,8 @@ crbug.com/326139 crbug.com/390125 media/video-frame-accurate-seek.html [ Failure
 crbug.com/248938 virtual/threaded/animations/3d/transform-origin-vs-functions.html [ Pass Failure ]
 crbug.com/248938 virtual/threaded/transitions/cancel-transition.html [ Pass Failure ]
 crbug.com/248938 virtual/threaded/transitions/extra-transition.html [ Pass Failure ]
+crbug.com/248938 [ Linux ] virtual/threaded/transitions/equivalent-background-image-no-transition.html [ Pass Timeout ]
+crbug.com/248938 [ Linux ] virtual/threaded/transitions/move-after-transition.html [ Pass Timeout ]
 crbug.com/248938 virtual/threaded/transitions/start-transform-transition.html [ Pass Failure ]
 crbug.com/248938 virtual/threaded/animations/animation-direction-normal.html [ Pass Failure Timeout ]
 crbug.com/248938 virtual/threaded/animations/animation-iteration-event-destroy-renderer.html [ Pass Timeout ]
@@ -250,18 +252,23 @@ crbug.com/248938 virtual/threaded/animations/dynamic-stylesheet-loading.html [ P
 crbug.com/248938 virtual/threaded/transitions/change-duration-during-transition.html [ Pass Failure ]
 crbug.com/248938 [ Win ] virtual/threaded/animations/change-keyframes.html [ Pass Failure ]
 crbug.com/248938 virtual/threaded/transitions/transition-end-event-nested.html [ Pass Failure ]
+crbug.com/248938 [ Mac ] virtual/threaded/transitions/transition-end-event-unprefixed-01.html [ Pass Failure ]
 crbug.com/513143 virtual/threaded/fast/scroll-behavior/subframe-interrupted-scroll.html [ Failure Pass ]
-crbug.com/248938 virtual/threaded/animations/display-none-terminates-animation.html  [ Pass Failure ]
+crbug.com/248938 virtual/threaded/animations/display-none-terminates-animation.html [ Pass Failure ]
 crbug.com/638693 virtual/threaded/animations/display-inline-style-adjust.html [ Pass Crash Failure ]
 crbug.com/421283 fast/html/marquee-scrollamount.html [ Pass Failure ]
 crbug.com/248938 [ Win Debug ] virtual/threaded/animations/delay-start-event.html [ Pass Failure ]
-crbug.com/248938 [ Win Debug ] virtual/threaded/transitions/transition-end-event-transform.html [ Pass Failure ]
+crbug.com/248938 [ Mac Win ] virtual/threaded/transitions/transition-end-event-transform.html [ Pass Failure ]
 crbug.com/248938 [ Linux Win ] virtual/threaded/animations/cascade-important.html [ Pass Timeout ]
 crbug.com/493815 inspector/elements/iframe-load-event.html [ Pass Failure ]
-crbug.com/248938 [ Win Debug ] virtual/threaded/transitions/transition-end-event-multiple-03.html [ Pass Failure ]
+crbug.com/248938 virtual/threaded/transitions/transition-end-event-multiple-03.html [ Pass Failure ]
 crbug.com/248938 [ Win Debug ] virtual/threaded/transitions/transition-end-event-multiple-04.html [ Pass Failure ]
+crbug.com/248938 [ Linux ] virtual/threaded/transitions/transition-end-event-prefixed-01.html [ Pass Timeout ]
 crbug.com/352405 virtual/threaded/animations/transition-and-animation-1.html [ Pass Timeout ]
 crbug.com/248938 virtual/threaded/transitions/transition-end-event-rendering.html [ Pass Timeout ]
+crbug.com/248938 [ Linux ] virtual/threaded/transitions/unprefixed-perspective-origin.html [ Pass Timeout ]
+crbug.com/248938 [ Linux ] virtual/threaded/transitions/transition-not-interpolable.html [ Pass Timeout ]
+crbug.com/248938 [ Mac ] virtual/threaded/transitions/interrupted-all-transition.html [ Pass Failure ]
 
 crbug.com/542541 [ Debug ] fast/events/click-count.html [ Pass Failure ]