[Sheriff] Mark seven more devtools/tracing tests as flaky.

Tests:
* http/tests/devtools/tracing/timeline-layout/timeline-layout-with-invalidations.js
* http/tests/devtools/tracing/timeline-paint/paint-profiler-update.js
* http/tests/devtools/tracing/timeline-paint/timeline-paint-image.js
* http/tests/devtools/tracing/timeline-style/timeline-style-recalc-with-invalidator-invalidations.js
* http/tests/devtools/tracing/timeline-worker-events.js
* virtual/threaded/http/tests/devtools/tracing/timeline-paint/timeline-paint-with-layout-invalidations-on-deleted-node.js
* virtual/threaded/http/tests/devtools/tracing/timeline-style/timeline-style-recalc-with-invalidator-invalidations.js

Also sort to facilitate (likely) additions to the flaky list.

NOTRY=true
TBR=kozyatinskiy@chromium.org

Bug: 850892
Change-Id: Id19047a051d47a579c0a3401f491ea95b77fa1ba
Reviewed-on: https://chromium-review.googlesource.com/1093725
Commit-Queue: Samuel Huang <huangs@chromium.org>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565761}

third_party/WebKit/LayoutTests/TestExpectations

@@ -4805,12 +4805,19 @@ crbug.com/849978 http/tests/devtools/elements/styles-4/stylesheet-source-url-com
 
 # Sheriff 2018-06-08
 crbug.com/850170 [ Mac ] virtual/reporting-api/external/wpt/content-security-policy/reporting-api/reporting-api-doesnt-send-reports-without-violation.https.sub.html [ Pass Timeout ]
-crbug.com/850892 http/tests/devtools/tracing/timeline-time/timeline-usertiming.js [ Pass Failure ]
 crbug.com/850892 http/tests/devtools/tracing/console-timeline.js [ Pass Failure ]
 crbug.com/850892 http/tests/devtools/tracing/timeline-js/timeline-script-id.js [ Pass Failure ]
+crbug.com/850892 http/tests/devtools/tracing/timeline-layout/timeline-layout-with-invalidations.js [ Pass Failure ]
+crbug.com/850892 http/tests/devtools/tracing/timeline-paint/paint-profiler-update.js [ Pass Failure ]
+crbug.com/850892 http/tests/devtools/tracing/timeline-paint/timeline-paint-image.js [ Pass Failure ]
+crbug.com/850892 http/tests/devtools/tracing/timeline-style/timeline-style-recalc-with-invalidator-invalidations.js [ Pass Failure ]
+crbug.com/850892 http/tests/devtools/tracing/timeline-time/timeline-usertiming.js [ Pass Failure ]
+crbug.com/850892 http/tests/devtools/tracing/timeline-worker-events.js [ Pass Failure ]
 crbug.com/850892 virtual/threaded/http/tests/devtools/tracing/timeline-misc/timeline-event-causes.js [ Pass Failure ]
-crbug.com/850892 virtual/threaded/http/tests/devtools/tracing/timeline-time/timeline-usertiming.js [ Pass Failure ]
 crbug.com/850892 virtual/threaded/http/tests/devtools/tracing/timeline-paint/timeline-paint-and-multiple-style-invalidations.js [ Pass Failure ]
+crbug.com/850892 virtual/threaded/http/tests/devtools/tracing/timeline-paint/timeline-paint-with-layout-invalidations-on-deleted-node.js [ Pass Failure ]
+crbug.com/850892 virtual/threaded/http/tests/devtools/tracing/timeline-style/timeline-style-recalc-with-invalidator-invalidations.js [ Pass Failure ]
+crbug.com/850892 virtual/threaded/http/tests/devtools/tracing/timeline-time/timeline-usertiming.js [ Pass Failure ]
 # The following test is known to timeout due to crbug.com/760543.
 crbug.com/850892 http/tests/devtools/tracing/timeline-style/timeline-style-recalc-all-invalidator-types.js [ Pass Timeout Failure ]
 crbug.com/851090 virtual/mouseevent_fractional/fast/events/middleClickAutoscroll-click-hyperlink.html [ Pass Failure ]