Implement URLSearchParams's size

[yoseio]

---

• ./mach build -d does not report any errors
• ./mach test-tidy does not report any errors
• These changes fix Implement URLSearchParams's size #29425

• There are tests for these changes OR
• These changes do not require tests because ___

[CYBAI]

Thank you! Looks good to me 👍

[mukilan]

@bors-servo r+

Thank you!

[bors-servo]

📌 Commit b6d3ff9 has been approved by mukilan

[bors-servo]

⌛ Testing commit b6d3ff9 with merge a516281...

[github-actions]

Results from try job (#4310861013):

Flaky unexpected result (19)

• TIMEOUT [expected OK] /_webgl/conformance/uniforms/out-of-bounds-uniform-array-access.html (#26225)
  • NOTRUN [expected PASS] subtest: Overall test
• OK /css/CSS2/floats/hit-test-floats-001.html (#23693)
  • PASS [expected FAIL] subtest: hit-test-floats-001
• OK /css/CSS2/floats/hit-test-floats-005.html (#25804)
  • PASS [expected FAIL] subtest: Miss clipped float
• OK /css/CSS2/normal-flow/block-in-inline-hittest-float-002.html (#29051)
  • FAIL [expected PASS] subtest: block-in-inline-hittest-float-002
• PASS [expected FAIL] /css/css-text/white-space/trailing-other-space-separators-break-spaces-011.html (#25875)
• OK /css/cssom-view/elementFromPoint-visibility-hidden-resizer.html (#28695)
  • FAIL [expected PASS] subtest: elementFromPoint on resizer area of an element with visibility:hidden
• OK /css/cssom-view/elementFromPosition.html (#21295)
  • PASS [expected FAIL] subtest: test some point of the element: top left corner
• OK /html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html (#28066)
  • PASS [expected FAIL] subtest: DE0D 0041 set in href="" targeting a frame and clicked
• OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.html (#29056)
  • FAIL [expected PASS] subtest: Cross-origin navigation started from unload handler must be ignored
• OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.html (#29049)
  • FAIL [expected PASS] subtest: Same-origin navigation started from unload handler must be ignored
• OK /html/browsers/history/the-history-interface/traverse_the_history_2.html (#21383)
  • PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
• TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/update-the-rendering.html (#24145)
  • TIMEOUT [expected FAIL] subtest: "Flush autofocus candidates" should be happen before a scroll event and animation frame callbacks
• TIMEOUT [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html (#22154)
  • NOTRUN [expected FAIL] subtest: Check that popups from a sandboxed iframe do not escape the sandbox
• TIMEOUT [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html (#24066)
  • NOTRUN [expected FAIL] subtest: Check that popups from a sandboxed iframe do not escape the sandbox
• OK /html/semantics/embedded-content/the-img-element/non-active-document.html (#21544)
  • FAIL [expected PASS] subtest: createHTMLDocument
  • FAIL [expected PASS] subtest: <template>
• OK /html/syntax/parsing/DOMContentLoaded-defer.html (#21550)
  • FAIL [expected PASS] subtest: The end: DOMContentLoaded and defer scripts
• OK /html/webappapis/dynamic-markup-insertion/document-write/module-tla-delayed.html (#29137)
  • FAIL [expected PASS] subtest: document.write in an imported module
• TIMEOUT [expected OK] /html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html (#26371)
  • TIMEOUT [expected FAIL] subtest: delayed handling: delaying handling rejected promise created from createImageBitmap will cause both events to fire
• OK /resource-timing/status-codes-create-entry.html (#28675)
  • PASS [expected FAIL] subtest: Make sure all status codes are reported

Stable unexpected results that are known to be intermittent (21)

• OK /_mozilla/css/stylesheet_media_queries.html (#17159)
  • PASS [expected FAIL] subtest: Media queries within stylesheets
• OK /css/CSS2/floats/hit-test-floats-002.html (#25733)
  • FAIL [expected PASS] subtest: Hit test float
• OK /css/css-flexbox/hittest-anonymous-box.html (#27091)
  • FAIL [expected PASS] subtest: Hit-testing within an anonymous flex-item should return the flexbox as the hittest result.
• OK /css/cssom-view/CaretPosition-001.html (#21338)
  • FAIL [expected PASS] subtest: Element at (400, 100)
• OK /css/cssom-view/elementFromPoint-float-in-relative.html (#27753)
  • PASS [expected FAIL] subtest: elementFromPoint-float-in-relative
• OK /css/cssom-view/elementFromPoint-subpixel.html (#23623)
  • PASS [expected FAIL] subtest: Hit test top left corner of box
• TIMEOUT /fetch/metadata/generated/css-images.sub.tentative.html (#29047)
  • TIMEOUT [expected PASS] subtest: background-image sec-fetch-site - HTTPS downgrade (header not sent)
• OK [expected TIMEOUT] /html/browsers/browsing-the-web/history-traversal/srcdoc/consecutive-srcdoc.html (#29084)
  • FAIL [expected TIMEOUT] subtest: changing srcdoc to about:srcdoc#yo then another srcdoc does two push navigations and we can navigate back
• OK [expected TIMEOUT] /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html (#29048)
  • FAIL [expected TIMEOUT] subtest: Navigating to a different document with form submission
• OK [expected TIMEOUT] /html/browsers/history/the-history-interface/traverse-during-unload.html (#28688)
  • PASS [expected TIMEOUT] subtest: Traversing the history during unload
• OK /html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html (#29046)
  • PASS [expected FAIL] subtest: first argument: absolute url
• OK [expected TIMEOUT] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html (#24066)
  • FAIL [expected NOTRUN] subtest: Check that popups from a sandboxed iframe do not escape the sandbox
• OK /html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html (#23205)
  • PASS [expected FAIL] subtest: Check that rel=noopener with target=_self does a normal load
• OK /html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html (#27659)
  • PASS [expected FAIL] subtest: async document.write in a module
• TIMEOUT /html/webappapis/scripting/events/compile-event-handler-settings-objects.html (#24246)
  • FAIL [expected PASS] subtest: The entry settings object while executing the compiled callback via Web IDL's invoke must be that of the node document
• TIMEOUT [expected OK] /webaudio/the-audio-api/the-audiocontext-interface/audiocontext-not-fully-active.html (#27664)
• CRASH [expected TIMEOUT] /webmessaging/broadcastchannel/cross-partition.https.tentative.html (#29058)
• TIMEOUT [expected OK] /webmessaging/with-ports/017.html (#24486)
  • TIMEOUT [expected PASS] subtest: origin of the script that invoked the method, about:blank
• TIMEOUT [expected OK] /webmessaging/with-ports/018.html (#24485)
  • TIMEOUT [expected PASS] subtest: origin of the script that invoked the method, javascript:
• OK [expected TIMEOUT] /webmessaging/without-ports/017.html (#24486)
  • PASS [expected TIMEOUT] subtest: origin of the script that invoked the method, about:blank
• OK [expected TIMEOUT] /webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html (#29053)
  • PASS [expected TIMEOUT] subtest: StorageKey: test 3P about:blank window opened from a 3P iframe

[bors-servo]

☀️ Test successful - checks-github
Approved by: mukilan
Pushing a516281 to master...