Disable flaky devtools layout test.

TBR=fdegans@chromium.org

Bug: 1036626
Change-Id: If75d049da7c99f3994b9fef50a589fdd8ef48617
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1980890Reviewed-by: Fabrice de Gans-Riberi <fdegans@chromium.org>
Commit-Queue: Fabrice de Gans-Riberi <fdegans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#727196}

third_party/blink/web_tests/TestExpectations

@@ -6139,3 +6139,6 @@ crbug.com/1034839 css3/filters/effect-reference-image.html [ Pass Failure ]
 
 # Sheriff 2019-12-18
 crbug.com/859169 http/tests/devtools/layers/layer-compositing-reasons.js [ Pass Failure ]
+
+# Sheriff 2019-12-23
+crbug.com/1036626 virtual/threaded/http/tests/devtools/tracing/tracing-record-input-events.js [ Pass Failure ]