Mark two 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 830a176ce2fc9e9e1d9e187e6f6b9ad96f795e74..8e80c535500bb16542f0affdce58dd96b9f2cdad 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -994,6 +994,7 @@ crbug.com/582836 imported/csswg-test/vendor-imports/mozilla/mozilla-central-reft
 crbug.com/582836 imported/csswg-test/vendor-imports/mozilla/mozilla-central-reftests/variables/variable-declaration-16.html [ Pass Failure ]
 crbug.com/582836 imported/csswg-test/vendor-imports/mozilla/mozilla-central-reftests/variables/variable-declaration-17.html [ Pass Failure ]
 crbug.com/582836 imported/csswg-test/vendor-imports/mozilla/mozilla-central-reftests/variables/variable-declaration-18.html [ Pass Failure ]
+crbug.com/613462 imported/csswg-test/vendor-imports/mozilla/mozilla-central-reftests/variables/variable-external-font-face-01.html [ Failure Pass ]
 
 # These need a rebaseline due crbug.com/504745 on Windows when they are activated again.
 crbug.com/521124 crbug.com/410145 [ Win7 ] fast/css/font-weight-1.html [ Pass Failure ]
@@ -1280,7 +1281,7 @@ crbug.com/453002 [ Win ] fast/text/justify-ideograph-vertical.html [ Failure Pas
 crbug.com/453002 [ Win ] fast/text/orientation-sideways.html [ Failure Pass ]
 
 crbug.com/587737 [ Mac10.11 Retina ] virtual/gpu-rasterization/fast/images/color-profile-filter.html [ Timeout Failure ]
-
+crbug.com/613463 [ Win ] virtual/threaded/fast/scroll-behavior/main-frame-interrupted-scroll.html [ Failure Pass ]
 crbug.com/602933 fast/canvas/canvas-incremental-repaint.html [ NeedsManualRebaseline ]
 
 crbug.com/599975 [ Android ] media/video-autoplay.html [ Crash Timeout ]