Hi API Owners, We are requesting approval to proceed with the staged deprecation rollout:
- 10% Stable: Hold for 2 weeks (through Oct 24) - 100% Stable: Target launch after Oct 24 During the initial rollout, we identified a regression ( https://crbug.com/553155942) where *window.open()* calls using *attributionsrc* were incorrectly opening in popup windows instead of new tabs. To fix this, we isolated the *window.open()* parsing behavior from this removal. This fix has been fully verified and rolled out to Stable in M155. With the *window.open()* regression fixed, we are not seeing any ongoing breakage. While overall usage metrics remain high (~12.37% <http://32.248.125.102/>), we believe it is safe to proceed. Thank you for your consideration. Best, Nan On Wednesday, July 1, 2026 at 11:34:36 AM UTC-4 Daniel Bratell wrote: LGTM3 for steps 2 and 3. /Daniel On 2026-06-26 10:21, Yoav Weiss (@Shopify) wrote: LGTM2 On Thu, Jun 25, 2026 at 11:12 PM Chris Harrelson <[email protected]> wrote: LGTM1 On Thu, Jun 11, 2026 at 2:54 PM Nan Lin <[email protected]> wrote: Hi API Owners, The Attribution Reporting API was deprecated in Chrome-144 with a plan to remove it in Chrome-150. Currently the usage is 19.7% of page loads. <https://chromestatus.com/metrics/webfeature/timeline/popularity/282>We are proposing the following as next steps for removal and associated timelines: 1. M150: Remove all Ads API-related entries from Chrome settings and UI surfaces (e.g., chrome://settings/adPrivacy) via field trial. After this point, all API invocations for field-trial enabled browsers will always reject. Since the API can already be disabled for one of many reasons, scripts must already handle such rejections (or they’re already significantly broken). 2. M152: Permanently remove the underlying implementation code for the API, and replace it with a lightweight stub API. The stub will remain removable via field trial. 3. M152 Canary/Beta: Begin a controlled rollout of the stub API removal via a field trial. 4. M152 Stable: Assuming there are no regressions or breakage after reaching 1% stable, we will request additional approval for full removal at this stage. At this time, we are seeking LGTMs for steps #2 and #3. Thanks, Nan -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/ chromium.org/d/msgid/blink-dev/b0f59039-244a-4ce7-838b- aab7e6ef51abn%40chromium.org <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/b0f59039-244a-4ce7-838b-aab7e6ef51abn%40chromium.org?utm_medium=email&utm_source=footer> . -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/ chromium.org/d/msgid/blink-dev/CAOMQ%2Bw8JtDZdVUb1kTtNc4dNYPs-3v% 3DJwkQU7oWAE6dSchxG1Q%40mail.gmail.com <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOMQ%2Bw8JtDZdVUb1kTtNc4dNYPs-3v%3DJwkQU7oWAE6dSchxG1Q%40mail.gmail.com?utm_medium=email&utm_source=footer> . -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/ chromium.org/d/msgid/blink-dev/CAOmohSJqg17LUafnekTwvpeaB2tiU OZaWcHyabB-xxoxr_Y8uQ%40mail.gmail.com <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohSJqg17LUafnekTwvpeaB2tiUOZaWcHyabB-xxoxr_Y8uQ%40mail.gmail.com?utm_medium=email&utm_source=footer> . -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/36d5e3ae-f9a5-4ea3-b0ea-d77aa42b4f5cn%40chromium.org.
