Disable webkit_layout_test remote-frame-crash.html

TBR=alph@chromium.org

Bug: 860031
Change-Id: I4883ed61585e0c1cc5c094968bbda224161d6dc4
Reviewed-on: https://chromium-review.googlesource.com/1125263Reviewed-by: Sarah Chan <spqchan@chromium.org>
Commit-Queue: Sarah Chan <spqchan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572367}

third_party/WebKit/LayoutTests/TestExpectations

@@ -4733,3 +4733,6 @@ crbug.com/859681 [ Mac10.13 ] http/tests/devtools/tracing/timeline-time/timeline
 crbug.com/859681 [ Mac10.13 ] http/tests/devtools/tracing/timeline-time/timeline-usertiming.js [ Failure ]
 crbug.com/859681 [ Mac10.13 ] virtual/threaded/http/tests/devtools/tracing/console-timeline.js [ Failure ]
 crbug.com/859681 [ Linux Mac10.13 ] virtual/threaded/http/tests/devtools/tracing/timeline-time/timeline-time.js [ Failure ]
+
+# Sheriff 2018-07-03
+crbug.com/860031 [ Linux ] http/tests/object/remote-frame-crash.html [ Failure ]