Update test failures in TestExpectation

Suspecting patch crrev.com/c/1290916 causes test failures. As the patch
was landed several hours ago, I'd like to disable the tests and assign
the owner for review.

TBR=skyostil@chromium.org
NOTRY=true

Bug: 897775
Change-Id: I416121366cae0d4503b1b02db075722be43db6a9
Reviewed-on: https://chromium-review.googlesource.com/c/1294129Reviewed-by: Yi Gu <yigu@chromium.org>
Commit-Queue: Yi Gu <yigu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601617}

third_party/WebKit/LayoutTests/TestExpectations

@@ -5339,5 +5339,5 @@ crbug.com/895777 external/wpt/infrastructure/assumptions/blank.html [ Failure Cr
 crbug.com/896765 [ Linux Mac Win ] http/tests/performance-timing/element-timing/observe-child-element.html [ Failure Pass ]
 
 #Sheriff 2018-10-22
-crbug.com/897775 [ Mac Win ] external/wpt/performance-timeline/webtiming-resolution.any.html [ Failure Pass ]
-crbug.com/897775 [ Mac Win ] external/wpt/performance-timeline/webtiming-resolution.any.worker.html [ Failure Pass ]
+crbug.com/897775 [ Linux Mac Win ] external/wpt/performance-timeline/webtiming-resolution.any.html [ Failure Pass ]
+crbug.com/897775 [ Linux Mac Win ] external/wpt/performance-timeline/webtiming-resolution.any.worker.html [ Failure Pass ]