Disbale webrtc/idlharness.https.window.html on all platforms

The test flakily times out.

TBR=hta@chromium.org,fdegans@chromium.org

Bug: 1033652
Change-Id: I030ba52b88fd758e8bdf0622be3315636d67c33a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1981049Reviewed-by: Fabrice de Gans-Riberi <fdegans@chromium.org>
Commit-Queue: Fabrice de Gans-Riberi <fdegans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#727255}

third_party/blink/web_tests/TestExpectations

@@ -6111,7 +6111,7 @@ crbug.com/1006759 inspector-protocol/heap-profiler/heap-snapshot-with-multiple-r
 crbug.com/1006759 inspector-protocol/heap-profiler/heap-snapshot-with-no-detached-iframe.js [ Pass Failure ]
 
 # Sheriff 2019-12-13
-crbug.com/1032451 [ Win7 ] virtual/webrtc-wpt-plan-b/external/wpt/webrtc/idlharness.https.window.html [ Failure ]
+crbug.com/1032451 virtual/webrtc-wpt-plan-b/external/wpt/webrtc/idlharness.https.window.html [ Failure Timeout Pass ]
 crbug.com/1033852 [ Win7 ] virtual/omt-worker-fetch/external/wpt/fetch/api/idlharness.any.sharedworker.html [ Failure ]
 crbug.com/1033387 [ Mac ] http/tests/portals/crbug-1031677.html [ Pass Timeout ]