Revert "Enable http/tests/webaudio/autoplay-crossorigin.html"

This reverts commit 0e8f7da5.

Reason for revert: still failing on bots, for example:

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Linux%20Tests%20%28dbg%29%281%29/75295

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.10%20Tests/35731


Original change's description:
> Enable http/tests/webaudio/autoplay-crossorigin.html
> 
> This test can be enabled again.
> 
> BUG=841933
> 
> Change-Id: I8729daf0584da308f089502f0730ae398befb022
> Reviewed-on: https://chromium-review.googlesource.com/c/1299550
> Reviewed-by: Łukasz Anforowicz <lukasza@chromium.org>
> Commit-Queue: Becca Hughes <beccahughes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#603107}

TBR=lukasza@chromium.org,beccahughes@chromium.org

Change-Id: Icb53758085810a468770f4492ac43ed1639b140f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 841933
Reviewed-on: https://chromium-review.googlesource.com/c/1302678Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: Dominic Mazzoni <dmazzoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603175}

third_party/WebKit/LayoutTests/TestExpectations

@@ -5194,6 +5194,9 @@ crbug.com/838254 virtual/video-surface-layer/media/webkit-media-controls-webkit-
 
 crbug.com/839332 [ Mac ] virtual/video-surface-layer/media/video-no-audio.html [ Pass Failure ]
 
+# This will break for now
+crbug.com/841933 http/tests/webaudio/autoplay-crossorigin.html [ Skip ]
+
 # Sheriff 2018-05-22
 crbug.com/845610 [ Win ] http/tests/inspector-protocol/target/target-browser-context.js [ Pass Failure ]