--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -424692,17 +424692,17 @@
    "28fcc080cb44907fdc7c6aeb7190652c1b65d7a2",
    "support"
   ],
   "LICENSE.md": [
    "6b346a528cd7bdce0315dcd3cf83ebaa826473e1",
    "support"
   ],
   "README.md": [
-   "c1679355673513647d823585819dc7bc2c086fab",
+   "684f4617f689d0611b18ce1b338bfdeb8d5886b7",
    "support"
   ],
   "WebCryptoAPI/META.yml": [
    "ec95611b3fed980e2897a5fe2bedc6bb7fa2913d",
    "support"
   ],
   "WebCryptoAPI/README.md": [
    "5546cf2b6f2a1b9d06054a515cc0bfc851a3c998",
@@ -636904,17 +636904,17 @@
    "5bd5c609cbd5e799787c93bac673fb8e392a7c30",
    "support"
   ],
   "tools/wptrunner/wptrunner/executors/testharness_servodriver.js": [
    "d731cc04d7011759ce63079fbd1242fd6426603b",
    "support"
   ],
   "tools/wptrunner/wptrunner/executors/testharness_webdriver.js": [
-   "22675f0703d33b0395b58b6e2b8c70c2adc76439",
+   "7f00050fa7ed6daf89ce6af7a0e610d0e5ddc42b",
    "support"
   ],
   "tools/wptrunner/wptrunner/executors/testharness_webdriver_resume.js": [
    "7a2df98ed4e73bf4618b169aa297f0c075ff8a19",
    "support"
   ],
   "tools/wptrunner/wptrunner/expected.py": [
    "f06abb946af16f690d434715c7b933f12d5a3335",
@@ -641336,45 +641336,45 @@
    "0ba172ff2e2734e5cbf324e816867be0a26b278e",
    "support"
   ],
   "webdriver/tests/accept_alert/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/accept_alert/accept.py": [
-   "ef52b036c4919ca11814ff3fdb0bb14f02bb1310",
+   "a111f103bf142b4041f2a8d1c6017de79b54560e",
    "wdspec"
   ],
   "webdriver/tests/actions/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/actions/conftest.py": [
    "47aad72ba05d4e0c7afe989030c91c7824cb0b07",
    "support"
   ],
   "webdriver/tests/actions/control_click.py": [
    "2ec819b772fcfa4d0a37395aa64fb89ad7686bda",
    "wdspec"
   ],
   "webdriver/tests/actions/key.py": [
-   "04d46652c1a40635eca8319e9c5227cd345b41fe",
+   "50c4ed9132b10cf63ad515bbfcbd30970b2c1974",
    "wdspec"
   ],
   "webdriver/tests/actions/key_shortcuts.py": [
    "ec062f752244d3f3fe1c0c83b22f48d972ba5984",
    "wdspec"
   ],
   "webdriver/tests/actions/modifier_click.py": [
    "fbfd837710b1c04c1dc606edb63b62a574eb0d9b",
    "wdspec"
   ],
   "webdriver/tests/actions/mouse.py": [
-   "acc8d9ef805e7418072f7b570dc1474c8afaa0ae",
+   "ca8bffceb71ff9621ae3359024c8d55ff17f7478",
    "wdspec"
   ],
   "webdriver/tests/actions/mouse_dblclick.py": [
    "fc53a51ab7691e817139e0a5a8477c9a96dda842",
    "wdspec"
   ],
   "webdriver/tests/actions/mouse_pause_dblclick.py": [
    "ad179673176b9d8ae90837c7cf09d33c75780a75",
@@ -641412,65 +641412,65 @@
    "6f844cd255a075d31caf1c19957af3d6ac833778",
    "support"
   ],
   "webdriver/tests/add_cookie/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/add_cookie/add.py": [
-   "5608cb81e0a70f88b694abbd4b50d2c81f363b8d",
+   "49b1d68e7d2baa5086d0b945e9d005c2d86234ea",
    "wdspec"
   ],
   "webdriver/tests/back/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/back/back.py": [
-   "0ecfccc193c6cef56ebe075d0bd10da110fd3803",
+   "0f94ab431ae012b0abc8406f6d372a6fafcf8048",
    "wdspec"
   ],
   "webdriver/tests/back/conftest.py": [
    "d5fd320a696a507718299c765278edde6205608a",
    "support"
   ],
   "webdriver/tests/back/user_prompts.py": [
    "b7f05462167335097724676beb1f31624336087f",
    "wdspec"
   ],
   "webdriver/tests/close_window/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/close_window/close.py": [
-   "57f52c1b9feb92bf604283fe51ace9e244c4b80a",
+   "f4e3b0481d3b3cbc93ba8b44c639934cf8eef9de",
    "wdspec"
   ],
   "webdriver/tests/close_window/user_prompts.py": [
    "4661ba513db73f79bf58046951ee8c8c2fc0c488",
    "wdspec"
   ],
   "webdriver/tests/conftest.py": [
-   "debf6fc5bc20935257bb4599b41f9ff89a086cec",
+   "c39671797f6bdf176d6b5d20b13412ee3a92cee4",
    "support"
   ],
   "webdriver/tests/delete_all_cookies/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/delete_all_cookies/delete.py": [
-   "363797086c9222c1a3d54b83ef172096c4c0771c",
+   "e0947b6a75724ac8e298d09d77ae940ea82e98d9",
    "wdspec"
   ],
   "webdriver/tests/delete_cookie/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/delete_cookie/delete.py": [
-   "2e79c9ba8e2ced03ef6a62211bf3f1add4730f9d",
+   "0b6adade156cecdfacf9f58be07bf5f697329124",
    "wdspec"
   ],
   "webdriver/tests/delete_cookie/user_prompts.py": [
    "31ae497c193ee33a0b204d0b58d29c01e19579dd",
    "wdspec"
   ],
   "webdriver/tests/delete_session/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
@@ -641480,37 +641480,37 @@
    "835f2525792136e7aa0082e9b32165b662e8cdd8",
    "wdspec"
   ],
   "webdriver/tests/dismiss_alert/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/dismiss_alert/dismiss.py": [
-   "c2d9ad340345ff370c1ad674b4b35efea2d5f3f0",
+   "c0efc38b47fd8b5d3d9fcf89a4dd803a9d38ec2f",
    "wdspec"
   ],
   "webdriver/tests/element_clear/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/element_clear/clear.py": [
-   "a882ba7d04ffbf8632e2d44a72c2a39b035eea7c",
+   "bc74af4b61624d2e9d155ef9438043e09dbf1622",
    "wdspec"
   ],
   "webdriver/tests/element_click/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/element_click/bubbling.py": [
    "2b08be1f983787f69507176b650e64902577b72d",
    "wdspec"
   ],
   "webdriver/tests/element_click/click.py": [
-   "ca8940c7c702a072cda5d5aeec5f3b080149c11a",
+   "4076a1a27c6635b6ae1ec111ead80cfadbde35ba",
    "wdspec"
   ],
   "webdriver/tests/element_click/file_upload.py": [
    "cd5bb434204d7259e3e4e964164e06c9418c59bb",
    "wdspec"
   ],
   "webdriver/tests/element_click/interactability.py": [
    "7af1197ac7179bf31e4541351c5292105f1aa3d6",
@@ -641536,65 +641536,65 @@
    "7a3619829d10de99268b35968e8dec8985575564",
    "support"
   ],
   "webdriver/tests/element_click/support/input.html": [
    "e2c6dadd1218e0a7d8b7d243a1c49b7f47092d77",
    "support"
   ],
   "webdriver/tests/element_send_keys/__init__.py": [
-   "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
+   "a7facf6fcf70309251757e3fb90b89255e13133f",
    "support"
   ],
   "webdriver/tests/element_send_keys/conftest.py": [
-   "54fd9d9dc01771804c025cf3d771b3f2d9c4f758",
+   "17bdd162a772bb0a5a4d14a2c2627a25ded9eca3",
    "support"
   ],
   "webdriver/tests/element_send_keys/content_editable.py": [
    "16ebc2d018fb7ef18669c089375881ba68236d10",
    "wdspec"
   ],
   "webdriver/tests/element_send_keys/events.py": [
-   "01c6e0924a45fa8ef51b830b8122ad851cec0b0e",
+   "41b00ef37fa24154231a485bbc45da036f40e717",
    "wdspec"
   ],
   "webdriver/tests/element_send_keys/file_upload.py": [
-   "0f2d85c3e3f2c78f8f155928d4725a64f740c17d",
+   "d1a8b81da78e9f809d36fa68b4f2d5acee73c615",
    "wdspec"
   ],
   "webdriver/tests/element_send_keys/form_controls.py": [
    "e53d0610f1ed99cdd8c9b257759ba99effa93d36",
    "wdspec"
   ],
   "webdriver/tests/element_send_keys/interactability.py": [
    "3a809aac6939b54b76cc2badec176abb216dcdd8",
    "wdspec"
   ],
   "webdriver/tests/element_send_keys/scroll_into_view.py": [
    "9ff0a9e25788921eb6d01add0e279c50d7de6134",
    "wdspec"
   ],
   "webdriver/tests/element_send_keys/send_keys.py": [
-   "e086a16332c80be31b57a7317181a04fea3295be",
+   "0d281d7f5cb3c2f3386504aedd66afa6269e65d3",
    "wdspec"
   ],
   "webdriver/tests/element_send_keys/user_prompts.py": [
    "742b62438254914f946b3d49ae2eadfc56c7ac33",
    "wdspec"
   ],
   "webdriver/tests/execute_async_script/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/execute_async_script/collections.py": [
    "8376fdfe061ca615ed12f632d878221ec5cb0e78",
    "wdspec"
   ],
   "webdriver/tests/execute_async_script/execute_async.py": [
-   "f0f10112811556da820308b8add7392dedbb76b0",
+   "2b6e61543176ea1ba15f4c399028ceb24878e3c9",
    "wdspec"
   ],
   "webdriver/tests/execute_async_script/user_prompts.py": [
    "9486a5b28a48feb5d8d24e511b0c8632ad1996ae",
    "wdspec"
   ],
   "webdriver/tests/execute_script/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
@@ -641604,237 +641604,237 @@
    "edee1e5532b81f07f19be09b40fc99c2df9ef6f8",
    "wdspec"
   ],
   "webdriver/tests/execute_script/cyclic.py": [
    "16bdcdd1dea5f27753cc525a754dffae3b589005",
    "wdspec"
   ],
   "webdriver/tests/execute_script/execute.py": [
-   "ffff398a071a7ae6e4b9e7a3653895779c881369",
+   "386afe0e1db172c310ff3aefa2bfb0078a79a966",
    "wdspec"
   ],
   "webdriver/tests/execute_script/json_serialize_windowproxy.py": [
    "9864227374e328514d54596f611c474c6f0fe3f3",
    "wdspec"
   ],
   "webdriver/tests/execute_script/user_prompts.py": [
    "32146824e2c3a8c211bbc2eb9cce48ebccd5a28a",
    "wdspec"
   ],
   "webdriver/tests/find_element/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/find_element/find.py": [
-   "7563179e2eacf034833c526b4b365759bad0a6f2",
+   "ad25e78e9e47fa7ef45bbd1546eae9c7da78f436",
    "wdspec"
   ],
   "webdriver/tests/find_element_from_element/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/find_element_from_element/find.py": [
-   "d5713b36aee6acf6e42ff85bc97fca989265d136",
+   "d44fbb3957bc7b3e0e47e0016ffae3d3bfdf3813",
    "wdspec"
   ],
   "webdriver/tests/find_elements/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/find_elements/find.py": [
-   "1dac2a34a2ee3a460158f218eadab0542fc9f92b",
+   "f6856e9ed6ed45fd6f40008ba4ee0309aff0d282",
    "wdspec"
   ],
   "webdriver/tests/find_elements_from_element/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/find_elements_from_element/find.py": [
-   "d24d45a7a44eab667908d854a7dc9ef55b883651",
+   "bcc18642c8fd86285be4ab2520b6d16aeb516f19",
    "wdspec"
   ],
   "webdriver/tests/forward/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/forward/conftest.py": [
    "d5fd320a696a507718299c765278edde6205608a",
    "support"
   ],
   "webdriver/tests/forward/forward.py": [
-   "17d4c56ed56b217bbcdddd10f96faf5afb77ebfa",
+   "a8c7e00b88dbf38db2e31f139e0e3853cc11a47a",
    "wdspec"
   ],
   "webdriver/tests/forward/user_prompts.py": [
    "f5d2ef97e4d6e93ce305b67c436e2e463a109bd2",
    "wdspec"
   ],
   "webdriver/tests/fullscreen_window/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/fullscreen_window/fullscreen.py": [
-   "3a7e4fa7b1d21a391ee0eee198483f4e51256fc7",
+   "5391114c67676ddf2e1aa907d1bd00da68edbe2f",
    "wdspec"
   ],
   "webdriver/tests/fullscreen_window/user_prompts.py": [
    "f7b4eadaefa120547c29c5b45ac0c5fdafabaad4",
    "wdspec"
   ],
   "webdriver/tests/get_active_element/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/get_active_element/get.py": [
-   "d13effb81f40f5463e2c4ffd6ea508c03f1e0e31",
+   "ac4f14d37c0b9b8cf4afa1d1af4ce1c8027c77c9",
    "wdspec"
   ],
   "webdriver/tests/get_alert_text/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/get_alert_text/get.py": [
-   "167991b5ccbb9d3f08969399d1bc44f3bc082050",
+   "2327abce3a4d266f0d14d8929c2ba58fedd3e441",
    "wdspec"
   ],
   "webdriver/tests/get_current_url/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/get_current_url/get.py": [
-   "843b426b937b3df5bf70985926f6174e2c135b6a",
+   "2758ba35474e508bb495579aa9e443781da496e6",
    "wdspec"
   ],
   "webdriver/tests/get_current_url/user_prompts.py": [
    "1bda1ef489d41114316fa959431db8252b6a9c2f",
    "wdspec"
   ],
   "webdriver/tests/get_element_attribute/get.py": [
-   "3fcc01a7ffa4f056a8b80c35c1217f37ea6bf9ca",
+   "02a155bcee6626037f424fbf387458ea46e6c206",
    "wdspec"
   ],
   "webdriver/tests/get_element_property/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/get_element_property/get.py": [
-   "f8df2822a6c3a730726c83734f37e550c2680d00",
+   "fde0f2a0cd6dd89b59287510f7049ceabac8d371",
    "wdspec"
   ],
   "webdriver/tests/get_element_property/user_prompts.py": [
    "699a1002a1094797d948ecdcf8899ab8d56d8dde",
    "wdspec"
   ],
   "webdriver/tests/get_element_tag_name/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/get_element_tag_name/get.py": [
-   "a83ac2594ba60ad545aec36cc8973164d98e4a37",
+   "d705ae1118f13c2472b6fa4b1c2fc44bb4967ec2",
    "wdspec"
   ],
   "webdriver/tests/get_element_tag_name/user_prompts.py": [
    "b9c41a9b85ad2a76ddb2c04e5ce0817853086888",
    "wdspec"
   ],
   "webdriver/tests/get_element_text/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/get_element_text/get.py": [
-   "4d1eb18a352f49180cde241fef8dd4dd77fd1088",
+   "9f660308bc29725299a083b0b71db80ed26ff8e8",
    "wdspec"
   ],
   "webdriver/tests/get_named_cookie/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/get_named_cookie/get.py": [
-   "cbf7195bad8f4caa06a5f48998634e3fb4a1a6de",
+   "915f26c801b5a69e1ed2a2d9f73fe0d862bf525a",
    "wdspec"
   ],
   "webdriver/tests/get_timeouts/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/get_timeouts/get.py": [
    "9601c00d903d5fcb7776e232177594ecd2562424",
    "wdspec"
   ],
   "webdriver/tests/get_title/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/get_title/get.py": [
-   "3b1673c3dd59efd0a6efe324e7f664dd2864f590",
+   "ed5b401c564ec7375b3be8ebd9124388f40062a7",
    "wdspec"
   ],
   "webdriver/tests/get_title/user_prompts.py": [
    "8c010b484b860b52c29104dd54a331239fa6ab0c",
    "wdspec"
   ],
   "webdriver/tests/get_window_rect/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/get_window_rect/get.py": [
-   "e4f01dc362b3a88de872daac137409194e5167fe",
+   "ee2c9eefd3f4ff81ea1cb8f33be58cc17f332030",
    "wdspec"
   ],
   "webdriver/tests/get_window_rect/user_prompts.py": [
    "17618c58e74d7495391a23ca0e7c0c8ed97b0735",
    "wdspec"
   ],
   "webdriver/tests/interface.html": [
    "d049d835f2fc60df7296da08a013793ae7e398ca",
    "testharness"
   ],
   "webdriver/tests/is_element_selected/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/is_element_selected/selected.py": [
-   "0e76e2349a83b801204e9c3801a90cbf8225a123",
+   "76361e50563d1589d867d7b7ddd45a287ea1eb6c",
    "wdspec"
   ],
   "webdriver/tests/is_element_selected/user_prompts.py": [
    "31c3920c8368ec5243386a17ad9b6d3102a15041",
    "wdspec"
   ],
   "webdriver/tests/maximize_window/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/maximize_window/maximize.py": [
-   "4ae8cab01995450f400fa93459d4b4b63637d10c",
+   "77af0b99169a91eb99ff81236e6fa61a7f1399f7",
    "wdspec"
   ],
   "webdriver/tests/maximize_window/user_prompts.py": [
    "6b588d63a8c1ab10bdfab2a29fd7b3cbc12d28ad",
    "wdspec"
   ],
   "webdriver/tests/minimize_window/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/minimize_window/minimize.py": [
-   "5c41b02fde6359d981fde7ff942e45a9d71ce5fc",
+   "be161a62e20191d41cd83ea2289cc5954af4892f",
    "wdspec"
   ],
   "webdriver/tests/minimize_window/user_prompts.py": [
    "4fab864c52dfb5e5ba449450c97d4f979a3500cc",
    "wdspec"
   ],
   "webdriver/tests/navigate_to/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/navigate_to/navigate.py": [
-   "7f5414b2b0fd8df52174a784743c22362122a034",
+   "9ac1be00b84eeae73aec8a1facb43b329bae6310",
    "wdspec"
   ],
   "webdriver/tests/new_session/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/new_session/conftest.py": [
    "74563f7b866165e67b870e47bb8707fcb4bc1cf4",
@@ -641872,53 +641872,53 @@
    "85ae1cd4ea85e0a1e0d712b1a7803d6066ab8739",
    "support"
   ],
   "webdriver/tests/page_source/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/page_source/source.py": [
-   "97e4e1eff255c2209cf36bc7885022acbcf9963f",
+   "0deb1b46488f9b6e79e98931fca54e6b5f693c2a",
    "wdspec"
   ],
   "webdriver/tests/refresh/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/refresh/refresh.py": [
-   "5d01a9157492ecece4af99d2424bc259a510ed64",
+   "30bd369bba1bd9395cd70f0d6b8b70a3a955cb5d",
    "wdspec"
   ],
   "webdriver/tests/refresh/user_prompts.py": [
    "6ec502747937cb5297b834e1137f56ff7cd75785",
    "wdspec"
   ],
   "webdriver/tests/send_alert_text/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/send_alert_text/send.py": [
-   "06262b82c94944f226f416af0999d066aef9a15a",
+   "9d4532a190c717ad7997a5b9ccb6d8d32a2cb1fc",
    "wdspec"
   ],
   "webdriver/tests/set_timeouts/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/set_timeouts/set.py": [
    "8dd0344dca561d50df6dd04a0d2507a015649e0c",
    "wdspec"
   ],
   "webdriver/tests/set_window_rect/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/set_window_rect/set.py": [
-   "114ddff18d44cba21f62f3c4d5fc8d34936321d3",
+   "f7965681744745458296864fda6718ebe4b75a26",
    "wdspec"
   ],
   "webdriver/tests/set_window_rect/user_prompts.py": [
    "9097931b0b30ccabf83d41a21bfa5bfd2da618e8",
    "wdspec"
   ],
   "webdriver/tests/status/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
@@ -641932,17 +641932,17 @@
    "d37faf6da04807045bd3c9e11c76826693d48906",
    "support"
   ],
   "webdriver/tests/support/asserts.py": [
    "1a7bbc2697c0cde846a59aaa08e656bd23cfaa43",
    "support"
   ],
   "webdriver/tests/support/fixtures.py": [
-   "775b1735e7d4076402506e12d6ecf7b24899e9a0",
+   "b4a29968b58cac2dfbe6b2ee28abdc3501cf4e01",
    "support"
   ],
   "webdriver/tests/support/http_request.py": [
    "ae28a6486b1333acc472ab2d37ac3f890249f1a2",
    "support"
   ],
   "webdriver/tests/support/inline.py": [
    "2f8fe9b79e3bacf1fb3bd9bcd981c8d8389fcd08",
@@ -641956,25 +641956,25 @@
    "6f439ec61a372bc1202f226a3b4e3f41509d5f60",
    "support"
   ],
   "webdriver/tests/switch_to_frame/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/switch_to_frame/switch.py": [
-   "955bd6b936d6d28d33a1152b33f063e889b0b3fb",
+   "403047958665981f5509e370e38897b8a463e2a7",
    "wdspec"
   ],
   "webdriver/tests/switch_to_parent_frame/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/switch_to_parent_frame/switch.py": [
-   "c5234727f2c358bbc815ddf5f3d89fc116cfc109",
+   "6b9c90f0cd83e2c916da989a81ed206618fbaf4a",
    "wdspec"
   ],
   "webdriver/tests/switch_to_window/__init__.py": [
    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
    "support"
   ],
   "webdriver/tests/switch_to_window/switch.py": [
    "17f7c4da328822fb342b7e3f510eb6ed007bce3f",
@@ -642824,17 +642824,17 @@
    "a1f7854e1a2f18036040f882889ff6758e9968c0",
    "testharness"
   ],
   "webrtc/RTCRtpTransceiver-setDirection.html": [
    "32cbff5d98586840ab9c37a1e1e05f262560848e",
    "testharness"
   ],
   "webrtc/RTCRtpTransceiver.https.html": [
-   "2bba7c4641c64b46b6e6a80c11e9ff8a6a30118e",
+   "f3b67632f2da94c8a01f95c829ffe129231835e0",
    "testharness"
   ],
   "webrtc/RTCSctpTransport-constructor.html": [
    "c415c3fe180b6718fa11c20b1bc9a1ecd88a4547",
    "testharness"
   ],
   "webrtc/RTCSctpTransport-maxMessageSize.html": [
    "28d17eeaccf3f26aaca93c9e1f1eab9edc643aaa",

--- a/testing/web-platform/tests/webdriver/tests/execute_script/execute.py
+++ b/testing/web-platform/tests/webdriver/tests/execute_script/execute.py
@@ -14,16 +14,21 @@ def execute_script(session, script, args
         body)
 
 
 def test_no_browsing_context(session, closed_window):
     response = execute_script(session, "return 1;")
     assert_error(response, "no such window")
 
 
+def test_ending_comment(session):
+    response = execute_script(session, "return 1; // foo")
+    assert_success(response, 1)
+
+
 @pytest.mark.parametrize("dialog_type", ["alert", "confirm", "prompt"])
 def test_abort_by_user_prompt(session, dialog_type):
     response = execute_script(
         session, "window.{}('Hello'); return 1;".format(dialog_type))
     assert_success(response, None)
 
     session.alert.accept()