[WebDriver BiDi] emulate user-agent string
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Support for user-agent emulations.
sadym-chromium
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user-agent string
This was referenced Aug 19, 2025
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Sep 10, 2025
Specification for `emulation.setUserAgentOverride` command. * Introduce a new hook "WebDriver BiDi emulated User-Agent". * Fetch spec update required, as the default `User-Agent` headers is set BEFORE the "[WebDriver BiDi before request sent](https://w3c.github.io/webdriver-bidi/#webdriver-bidi-before-request-sent)" is invoked, so there is no way to distinguish between the user explicitly set the `User-Agent` vs the [default `User-Agent` value](https://fetch.spec.whatwg.org/#default-user-agent-value) was used. Use the hook in Fetch spec: whatwg/fetch#1851 * HTML spec update required to return the proper `User-Agent` as the result of the `navigator.userAgent`. Use the hook in HTML spec: whatwg/html#11576
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Support for user-agent emulations. WebDriver BiDi specification: https://www.w3.org/TR/webdriver-bidi/#command-emulation-setUserAgentOverride
(See WHATWG Working Mode: Changes for more details.)
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