Disable flaky release-handle-crash test.

TBR=olka@chromium.org

Bug: 893015
Change-Id: Ida8106cf8d29659b3a66ed7d85d007302acfc5f6
Reviewed-on: https://chromium-review.googlesource.com/c/1268518
Commit-Queue: Joshua Pawlicki <waffles@chromium.org>
Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#597596}

third_party/WebKit/LayoutTests/TestExpectations

@@ -5253,3 +5253,5 @@ crbug.com/892772 [ Mac ] editing/caret/caret-painting-low-dpi.html [ Failure Pas
 # Flakiness in DTMF
 crbug.com/893112 virtual/webrtc-wpt-unified-plan/external/wpt/webrtc/RTCDTMFSender-ontonechange.https.html [ Pass Failure ]
 
+# Sheriff 2018-10-08
+crbug.com/893015 virtual/outofblink-cors/http/tests/fetch/chromium/release-handle-crash.html [ Failure Pass ]