Hello blink-dev, We’d like to ask for an extension to our Origin Trial, from M124 to M130. This is due to the dependency on isolated web apps.
Contact emails sim...@google.com <https://groups.google.com/> Explainer https://github.com/screen-share/capture-all-screens/blob/main/README.md Specification https://screen-share.github.io/capture-all-screens Design docs https://screen-share.github.io/capture-all-screens https://github.com/screen-share/capture-all-screens/blob/main/README.md https://docs.google.com/document/d/13el0NriAUpAzLUw96V7zQiMSjgH9zVaTXUHtuaq8-HI/edit?resourcekey=0-jRPpeLth1odq6M5iFLswig Summary Capture all the screens currently connected to the device using getAllScreensMedia(). Calling getDisplayMedia() multiple times requires multiple user gestures, burdens the user with choosing the next screen each time, and does not guarantee to the app that all the screens were selected. getAllScreensMedia() improves on all of these fronts. (As this feature has extreme privacy ramifications, it is only exposed behind an enterprise policy, and users are warned before recording even starts, that recording *could* start at some point.) Blink component Blink>GetDisplayMediaSet <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EGetDisplayMediaSet> TAG review https://github.com/w3ctag/design-reviews/issues/856 TAG review status Complete Chromium Trial Name GetAllScreensMedia Link to origin trial feedback summary https://github.com/screen-share/capture-all-screens/issues Origin Trial documentation link https://github.com/screen-share/capture-all-screens Risks Interoperability and Compatibility This API is only available to origins allowlisted by administrators through a policy. The policy itself is non-standard, limiting even theoretical interoperability.This API rejects requests from pages that are not allow-listed through an administrator. The likelihood of this API being adopted by a browser that does not provide administrators mechanisms to manage clients is low. Gecko: N/A WebKit: N/A Web developers: Positive ( https://github.com/screen-share/capture-all-screens/issues/9) Other signals: Ergonomics No Activation The challenge for developers is the limitation of the API to origins allowlisted by an enterprise policy. Security 1. Risk of malicious sites exploiting the API and gaining access to sensitive information on users' devices. This risk is mitigated by the API only being accessible to origins allowlisted by an enterprise policy. 2. Risk of users loading private information that gets recorded and made available to apps affiliated with their device's admin. This risk is mitigated by informing users that recording might start at any moment before the API becomes accessible. (In CrOS, this warning is delivered in the log-in screen, and when users log-in despite the warning, this is tantamount to assent.) 3. Risk of users forgetting that their screens are being recorded. This risk is mitigated through a persistent notification. Goals for experimentation Learn about the experience of web developers and how this API fulfills their needs. Reason this experiment is being extended This API will eventually be released for isolated contexts, which are delayed. Hence, we are asking for an extension of the origin trial. Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)? No This API is initially implemented on CrOS, where demand for it is greatest, and where we have the most flexibility in offering users early warning that their screens may be recorded if they proceed past the log-in screen. Lessons learned from shipping this API on CrOS will be used when deciding how to correctly implement such warnings on other platforms. Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> ? No, as WPTs don’t support setting of managed policies. The API is tested by a number of unit- and browser- tests (Test files <https://source.chromium.org/search?q=getallscreensmedia%20f:test.cc%20-f:out%2F&sq=> ). DevTrial instructions https://github.com/screen-share/capture-all-screens/blob/main/HOWTO.md Flag name on chrome://flags enable-get-all-screens-media Finch feature name None Non-finch justification None Requires code in //chrome? True Tracking bug https://issues.chromium.org/issues/40216442 Launch bug https://launch.corp.google.com/launch/4201060 Estimated milestones Origin trial desktop first 118 Origin trial desktop last 124 Origin trial extension 1 end milestone 130 DevTrial on desktop 116 Link to entry on the Chrome Platform Status https://chromestatus.com/feature/6284029979525120 Links to previous Intent discussions Intent to prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAEdDZo9N354i6eST0x19TXwpeBtgs5_gJUYVF%2BTKLpiJySDADg%40mail.gmail.com Intent to Experiment: https://groups.google.com/a/chromium.org/g/blink-dev/c/6TRT0XsVOE4/m/NOm-YEQCAgAJ *Simon Hangl* Software Engineer simo...@google.com Google Germany GmbH Erika-Mann-Straße 33 80636 München Geschäftsführer: Paul Manicle, Halimah DeLaine Prado Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Diese E-Mail ist vertraulich. 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