Mark devtools/tracing/timeline-time/timeline-usertiming.js as flaky

Drive-by: merge entries for timeline-recalculate-styles.js

TBR: alph@chromium.org, jam@chromium.org
Bug: 823837
Change-Id: I8d29104d3784747bfb5260c8349d409dc7d016f5
Reviewed-on: https://chromium-review.googlesource.com/1072413
Commit-Queue: Andrey Kosyakov <caseq@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#561673}

third_party/WebKit/LayoutTests/TestExpectations

@@ -4536,7 +4536,8 @@ skbug.com/7641 fast/multicol/border-radius-clipped-layer.html [ Failure Pass ]
 skbug.com/7641 virtual/disable-spv175/fast/multicol/border-radius-clipped-layer.html [ Failure Pass ]
 
 # Sheriff failures 2018-01-02
-crbug.com/798592 virtual/threaded/http/tests/devtools/tracing/timeline-style/timeline-recalculate-styles.js [ Pass Failure ]
+crbug.com/798592 [ Win7 Mac ] http/tests/devtools/tracing/timeline-style/timeline-recalculate-styles.js [ Pass Failure ]
+crbug.com/798592 [ Win7 Mac ] virtual/threaded/http/tests/devtools/tracing/timeline-style/timeline-recalculate-styles.js [ Pass Failure ]
 
 # Sheriff failures 2018-01-03
 crbug.com/798680 external/wpt/pointerevents/pointerlock/pointerevent_pointerlock_supercedes_capture-manual.html [ Pass Timeout ]
@@ -4563,10 +4564,6 @@ crbug.com/809152 netinfo/estimate-multiple-frames.html [ Pass Failure ]
 crbug.com/810009 [ Linux ] paint/invalidation/image/canvas-composite-repaint-by-all-imagesource.html [ Pass Timeout ]
 crbug.com/810009 [ Linux ] virtual/disable-spv175/paint/invalidation/image/canvas-composite-repaint-by-all-imagesource.html [ Pass Timeout ]
 
-# Sheriff failures 2018-02-15
-crbug.com/812417 [ Win7 ] http/tests/devtools/tracing/timeline-style/timeline-recalculate-styles.js [ Failure ]
-
-
 # Sheriff failures 2018-02-20
 crbug.com/789921 media/controls/repaint-on-resize.html [ Failure Pass ]
 
@@ -4797,3 +4794,5 @@ crbug.com/843691 fast/css/opacity-float.html [ Failure ]
 
 # Sheriff 2018-05-22
 crbug.com/845610 [ Win ] http/tests/inspector-protocol/target/target-browser-context.js [ Pass Failure ]
+crbug.com/823837 virtual/threaded/http/tests/devtools/tracing/timeline-time/timeline-usertiming.js [ Pass Failure ]
+crbug.com/823837 http/tests/devtools/tracing/timeline-time/timeline-usertiming.js [ Pass Failure ]