The test-harness update at https://codereview.chromium.org/2891463002
has updated many tests with expectations of failure such as:

crash-expected.txt
>>>> 
FAIL Do not crash when exceptions are thrown during keyframe iteration. Test bug: need to pass exception to assert_throws()
<<<<

These tests are no longer being run properly, and no longer test what they are supposed to. We should fix them.

The root cause is that test-harness.js has changed the way 
assert_throws works.
 
assert_throws(code, func, description)

Passing "null" for a code used to be acceptable. Now the code must be "the expected exception".

Fixing each test involves running the test, figuring out what the
thrown exception is, and fixing the assert_throws call. For example:

assert_throws(null, .....

becomes:

assert_throws({name: "TypeError"}, .......

The tests affected are:

third_party/WebKit/LayoutTests/animations/keyframe-iteration-exception-crash-expected.txt
third_party/WebKit/LayoutTests/bindings/dictionary-iterator-expected.txt
third_party/WebKit/LayoutTests/bluetooth/idl/idl-BluetoothDevice-expected.txt
third_party/WebKit/LayoutTests/bluetooth/idl/idl-BluetoothGATTRemoteServer-expected.txt
third_party/WebKit/LayoutTests/custom-elements/constructor-context-dies-cross-context-call-expected.txt
third_party/WebKit/LayoutTests/custom-elements/v0-v1-interop-expected.txt
third_party/WebKit/LayoutTests/external/wpt/content-security-policy/securitypolicyviolation/idl-expected.txt
third_party/WebKit/LayoutTests/external/wpt/credential-management/idl.https-expected.txt
third_party/WebKit/LayoutTests/external/wpt/cssom/interfaces-expected.txt
third_party/WebKit/LayoutTests/external/wpt/dom/interfaces-expected.txt
third_party/WebKit/LayoutTests/external/wpt/domxpath/interfaces-expected.txt
third_party/WebKit/LayoutTests/external/wpt/fetch/api/headers/headers-idl-expected.txt
third_party/WebKit/LayoutTests/external/wpt/fetch/api/request/request-idl-expected.txt
third_party/WebKit/LayoutTests/external/wpt/fetch/api/response/response-idl-expected.txt
third_party/WebKit/LayoutTests/external/wpt/IndexedDB/interleaved-cursors-expected.txt
third_party/WebKit/LayoutTests/external/wpt/media-source/interfaces-expected.txt
third_party/WebKit/LayoutTests/external/wpt/mediacapture-fromelement/idlharness-expected.txt
third_party/WebKit/LayoutTests/external/wpt/mediacapture-record/idlharness-expected.txt
third_party/WebKit/LayoutTests/external/wpt/mediacapture-streams/MediaStreamTrack-init.https-expected.txt
third_party/WebKit/LayoutTests/external/wpt/mediasession/idlharness-expected.txt
third_party/WebKit/LayoutTests/external/wpt/orientation-event/idlharness-expected.txt
third_party/WebKit/LayoutTests/external/wpt/payment-request/payment-request-show-method.https-expected.txt
third_party/WebKit/LayoutTests/external/wpt/resources/idlharness.js
third_party/WebKit/LayoutTests/external/wpt/resources/testharness.js
third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/fetch-request-fallback.https-expected.txt
third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/register-link-element.https-expected.txt
third_party/WebKit/LayoutTests/external/wpt/svg/interfaces-expected.txt
third_party/WebKit/LayoutTests/external/wpt/url/interfaces-expected.txt
third_party/WebKit/LayoutTests/external/wpt/web-animations/interfaces/Animation/idlharness-expected.txt
third_party/WebKit/LayoutTests/external/wpt/webrtc/datachannel-idlharness-expected.txt
third_party/WebKit/LayoutTests/external/wpt/webrtc/interfaces-expected.txt
third_party/WebKit/LayoutTests/external/wpt/webrtc/RTCPeerConnection-idl-expected.txt
third_party/WebKit/LayoutTests/external/wpt/webstorage/idlharness-expected.txt
third_party/WebKit/LayoutTests/external/wpt/webvtt/api/interfaces-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-2d-imageData-create-nonfinite-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-arc-negative-radius-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-currentTransform-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-ellipse-negative-radius-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-getContext-invalid-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-getImageData-invalid-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-hit-regions-fill-rule-test-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-ImageData-constructor-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-isPointInPath-winding-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-lineDash-input-sequence-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-lineDash-invalid-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-overloads-drawImage-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-overloads-fillText-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-overloads-strokeText-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-path-addpath-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-path-context-clip-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-path-context-fill-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-path-context-stroke-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-pattern-behaviour-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-putImageData-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/canvas-with-incorrect-args-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/draw-focus-if-needed-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/draw-focus-if-needed-with-path2d-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/drawImage-with-broken-image-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/drawImage-with-valid-image-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/gradient-addColorStop-with-invalid-color-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/gradient-addColorStop-with-invalid-offset-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/linearGradient-infinite-values-expected.txt
third_party/WebKit/LayoutTests/fast/canvas/radialGradient-infinite-values-expected.txt
third_party/WebKit/LayoutTests/fast/dom/custom/custom-elements-registry-expected.txt
third_party/WebKit/LayoutTests/fast/dom/dataset-expected.txt
third_party/WebKit/LayoutTests/fast/dom/lenient-this-expected.txt
third_party/WebKit/LayoutTests/fast/dom/Window/window-constructor-expected.txt
third_party/WebKit/LayoutTests/fast/dom/Window/window-methods-construct-expected.txt
third_party/WebKit/LayoutTests/fast/encoding/api/sharedarraybuffer-expected.txt
third_party/WebKit/LayoutTests/fast/js/put-forwards-expected.txt
third_party/WebKit/LayoutTests/fast/mediarecorder/BlobEvent-basic-expected.txt
third_party/WebKit/LayoutTests/fast/serviceworker/serviceworker-interface-expected.txt
third_party/WebKit/LayoutTests/fast/serviceworker/serviceworkercontainer-interface-expected.txt
third_party/WebKit/LayoutTests/fast/xmlhttprequest/xmlhttprequest-send-sharedarraybuffer-expected.txt
third_party/WebKit/LayoutTests/http/tests/background_fetch/background-fetch-click-event.https-expected.txt
third_party/WebKit/LayoutTests/http/tests/background_fetch/background-fetch-event.https-expected.txt
third_party/WebKit/LayoutTests/http/tests/background_fetch/background-fetch-fail-event.https-expected.txt
third_party/WebKit/LayoutTests/http/tests/background_fetch/background-fetched-event.https-expected.txt
third_party/WebKit/LayoutTests/http/tests/notifications/notification-properties-expected.txt
third_party/WebKit/LayoutTests/http/tests/notifications/serviceworker-notification-properties-expected.txt
third_party/WebKit/LayoutTests/http/tests/push_messaging/pushmessagedata-expected.txt
third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/idlharness-expected.txt
third_party/WebKit/LayoutTests/mojo/codec-expected.txt
third_party/WebKit/LayoutTests/mojo/union-expected.txt
third_party/WebKit/LayoutTests/nfc/idl-NFC-expected.txt
third_party/WebKit/LayoutTests/payments/payment-request-interface-expected.txt
third_party/WebKit/LayoutTests/platform/mac-retina/external/wpt/IndexedDB/interleaved-cursors-expected.txt
third_party/WebKit/LayoutTests/platform/mac/http/tests/security/w3c/cross-origin-objects-expected.txt
third_party/WebKit/LayoutTests/platform/win7/http/tests/security/w3c/cross-origin-objects-expected.txt
third_party/WebKit/LayoutTests/platform/win7/virtual/mojo-loading/http/tests/security/w3c/cross-origin-objects-expected.txt
third_party/WebKit/LayoutTests/resize-observer/observe-expected.txt
third_party/WebKit/LayoutTests/resources/idlharness.js
third_party/WebKit/LayoutTests/resources/testharness.js
third_party/WebKit/LayoutTests/storage/indexeddb/observer-expected.txt
third_party/WebKit/LayoutTests/storage/indexeddb/observer-worker-expected.txt
third_party/WebKit/LayoutTests/svg/dom/SVGLength-calc-in-attr-expected.txt
third_party/WebKit/LayoutTests/svg/dom/svglength-units-expected.txt
third_party/WebKit/LayoutTests/svg/dom/SVGLength-viewport-units-expected.txt
third_party/WebKit/LayoutTests/TestExpectations
third_party/WebKit/LayoutTests/typedcssom/computedstyle/computedStylePropertyMap-expected.txt
third_party/WebKit/LayoutTests/typedcssom/cssCalcLength-expected.txt
third_party/WebKit/LayoutTests/typedcssom/cssMatrixComponent-expected.txt
third_party/WebKit/LayoutTests/typedcssom/cssPerspective-expected.txt
third_party/WebKit/LayoutTests/typedcssom/cssScale-expected.txt
third_party/WebKit/LayoutTests/typedcssom/cssSimpleLength-expected.txt
third_party/WebKit/LayoutTests/typedcssom/cssSkew-expected.txt
third_party/WebKit/LayoutTests/typedcssom/cssTranslation-expected.txt
third_party/WebKit/LayoutTests/virtual/mojo-loading/http/tests/security/w3c/cross-origin-objects-expected.txt