Update TestExpectation for pointerevent_touch-action-pinch_zoom_touch.html

This test started to timeout:
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=webkit_layout_tests%20(with%20patch)&tests=virtual/threaded/fast/events/pointerevents/pinch/pointerevent_touch-action-pinch_zoom_touch.html

TBR=nzolghadr@chromium.org
NOTRY=True

Bug: 806357
Change-Id: Idf5613122c9f7c17f201730402961830e2a24e8e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2024912Reviewed-by: Yi Gu <yigu@chromium.org>
Commit-Queue: Yi Gu <yigu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735879}

third_party/blink/web_tests/TestExpectations

@@ -5526,7 +5526,7 @@ crbug.com/941471 external/wpt/css/css-transforms/transform-flattening-001.html [
 crbug.com/836242 [ Linux ] fast/loader/reload-zero-byte-plugin.html [ Pass Failure ]
 crbug.com/836242 [ Mac ] fast/loader/reload-zero-byte-plugin.html [ Pass Failure ]
 crbug.com/836242 [ Win ] fast/loader/reload-zero-byte-plugin.html [ Pass Failure ]
-crbug.com/806357 virtual/threaded/fast/events/pointerevents/pinch/pointerevent_touch-action-pinch_zoom_touch.html [ Pass Failure Crash ]
+crbug.com/806357 virtual/threaded/fast/events/pointerevents/pinch/pointerevent_touch-action-pinch_zoom_touch.html [ Pass Failure Crash Timeout ]
 crbug.com/941931 [ Linux ] http/tests/security/contentSecurityPolicy/1.1/plugintypes-affects-cross-site-child-disallowed.html [ Pass Failure ]
 crbug.com/941931 [ Win ] http/tests/security/contentSecurityPolicy/1.1/plugintypes-affects-cross-site-child-disallowed.html [ Pass Failure ]
 crbug.com/942134 [ Win ] virtual/exotic-color-space/images/feature-policy-oversized-images.html [ Pass Failure ]