Revert of SharedArrayBuffer throws serializing to indexeddb

third_party/WebKit/LayoutTests/SlowTests

 # See //docs/testing/layout_test_expectations.md
 # for more information on this file.
 
 # This file should only mark tests as Slow. If they are failing in some other way, that listing should be in TestExpectations.
 # Lines listed in both files will have the *union* of the expectations.
 
 # In general, we should list tests in this file if they are slower than ~30% of the default timeout time, as we
 # can see a 3x variance or more in test times on the bots. In practice, this means that any test that takes longer
 # than 2 seconds in Release mode or 6 seconds in Debug mode should be listed here.
 
 crbug.com/24182 storage/indexeddb/objectstore-cursor.html [ Slow ]
-crbug.com/24182 virtual/sharedarraybuffer/storage/indexeddb/objectstore-cursor.html [ Slow ]
 crbug.com/24182 storage/indexeddb/mozilla/test_objectStore_openKeyCursor.html [ Slow ]
-crbug.com/24182 virtual/sharedarraybuffer/storage/indexeddb/mozilla/test_objectStore_openKeyCursor.html [ Slow ]
 crbug.com/24182 editing/selection/modify_move/move-by-word-visually-mac.html [ Slow ]
 crbug.com/24182 editing/selection/modify_move/move-by-word-visually-multi-line.html [ Slow ]
 crbug.com/24182 compositing/culling/filter-occlusion-blur-large.html [ Slow ]
 crbug.com/24182 compositing/video-frame-size-change.html [ Slow ]
 crbug.com/24182 virtual/disable-spinvalidation/compositing/culling/filter-occlusion-blur-large.html [ Slow ]
 crbug.com/24182 virtual/disable-spinvalidation/compositing/video-frame-size-change.html [ Slow ]
 crbug.com/24182 css3/filters/effect-reference-hidpi-hw.html [ Slow ]
 crbug.com/24182 css3/filters/filter-change-repaint-composited.html [ Slow ]
 crbug.com/24182 editing/selection/caret-at-bidi-boundary.html [ Slow ]
 crbug.com/24182 editing/selection/modify_move/move-by-word-visually-single-space-inline-element.html [ Slow ]
@@ skipping 236 matching lines @@
 crbug.com/411164 [ Win ] http/tests/security/powerfulFeatureRestrictions/serviceworker-on-insecure-origin.html [ Slow ]
 crbug.com/411164 [ Win ] virtual/mojo-loading/http/tests/security/powerfulFeatureRestrictions/serviceworker-on-insecure-origin.html [ Slow ]
 crbug.com/510337 inspector/console/console-format.html [ Slow ]
 crbug.com/357427 http/tests/workers/terminate-during-sync-operation-file.html [ Slow ]
 crbug.com/357427 virtual/mojo-loading/http/tests/workers/terminate-during-sync-operation-file.html [ Slow ]
 crbug.com/357427 http/tests/workers/terminate-during-sync-operation-filesystem.html [ Slow ]
 crbug.com/357427 virtual/mojo-loading/http/tests/workers/terminate-during-sync-operation-filesystem.html [ Slow ]
 crbug.com/364250 [ Debug ] virtual/threaded/animations/interpolation/transform-interpolation.html [ Slow ]
 crbug.com/364250 [ Debug ] virtual/threaded/animations/interpolation/webkit-transform-interpolation.html [ Slow ]
 crbug.com/402379 [ Win7 Debug ] storage/indexeddb/cursor-continue-validity.html [ Slow ]
-crbug.com/402379 [ Win7 Debug ] virtual/sharedarraybuffer/storage/indexeddb/cursor-continue-validity.html [ Slow ]
 crbug.com/402379 [ Win7 Debug ] storage/indexeddb/mozilla/indexes.html [ Slow ]
-crbug.com/402379 [ Win7 Debug ] virtual/sharedarraybuffer/storage/indexeddb/mozilla/indexes.html [ Slow ]
 crbug.com/504706 [ Linux ] inspector/profiler/heap-snapshot-containment-expansion-preserved-when-sorting.html [ Slow ]
 crbug.com/504706 [ Linux ] inspector/profiler/heap-snapshot-containment-sorting.html [ Slow ]
 crbug.com/440452 virtual/display_list_2d_canvas/fast/canvas/canvas-partial-invalidation-zoomed.html [ Slow ]
 crbug.com/480769 http/tests/inspector/service-workers/service-workers-redundant.html [ Slow ]
 crbug.com/480769 virtual/mojo-loading/http/tests/inspector/service-workers/service-workers-redundant.html [ Slow ]
 crbug.com/480769 http/tests/inspector/service-workers/service-worker-agents.html [ Slow ]
 crbug.com/480769 virtual/mojo-loading/http/tests/inspector/service-workers/service-worker-agents.html [ Slow ]
 crbug.com/504703 inspector-protocol/debugger/debugger-step-into-dedicated-worker.html [ Slow ]
 crbug.com/535478 [ Win ] virtual/threaded/inspector/tracing/decode-resize.html [ Slow ]
 crbug.com/548765 http/tests/inspector/console-fetch-logging.html [ Slow ]
@@ skipping 98 matching lines @@
 # These tests are slow with our MESA backend. They may be less slow when we have
 # bots running tests on real hardware or maybe when using SwiftShader.
 crbug.com/646528 compositing/lots-of-img-layers.html [ Slow ]
 crbug.com/646528 compositing/lots-of-img-layers-with-opacity.html [ Slow ]
 crbug.com/646528 virtual/disable-spinvalidation/compositing/lots-of-img-layers.html [ Slow ]
 crbug.com/646528 virtual/disable-spinvalidation/compositing/lots-of-img-layers-with-opacity.html [ Slow ]
 
 # IDB Observer tests require multiple browsing contexts/workers interacting with
 # IndexedDB, which can be slow.
 crbug.com/660468 [ Linux ] storage/indexeddb/observer-frame.html [ Slow ]
-crbug.com/660468 [ Linux ] virtual/sharedarraybuffer/storage/indexeddb/observer-frame.html [ Slow ]
 crbug.com/660468 [ Linux ] storage/indexeddb/observer-workers.html [ Slow ]
-crbug.com/660468 [ Linux ] virtual/sharedarraybuffer/storage/indexeddb/observer-workers.html [ Slow ]
 
 crbug.com/660492 [ Linux ] storage/indexeddb/structured-clone.html [ Slow ]
-crbug.com/660492 [ Linux ] virtual/sharedarraybuffer/storage/indexeddb/structured-clone.html [ Slow ]
 
 # Foreign fetch tests make many requests, and create multiple browsing contexts,
 # which can be very slow.
 crbug.com/678498 external/wpt/service-workers/service-worker/foreign-fetch-cors.https.html [ Slow ]
 crbug.com/678496 external/wpt/service-workers/service-worker/foreign-fetch-basics.https.html [ Slow ]