LGTM I'll be very interested to hear what we learn from an OT here!
Rick On Wed, Jul 22, 2026 at 4:01 AM Chromestatus < [email protected]> wrote: > *Contact emails* > [email protected] > > *Explainer* > https://github.com/explainers-by-googlers/declarative-performance-observer > > *Specification* > *No information provided* > > *Summary* > The Declarative Performance Observer proposes a reliable browser-resident > telemetry system that reports of performance metrics from navigation > initiation to page termination. By using a declarative HTTP response > header, it ensures that data is captured even in scenarios where the > request failed due to the network error or the renderer process is killed > by the OS. > > *Blink component* > Blink>PerformanceAPIs > <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EPerformanceAPIs%22> > > *Web Feature ID* > performance <https://webstatus.dev/features/performance> > > *TAG review* > *No information provided* > > *TAG review status* > Pending > > *Goals for experimentation* > The main goal of the Declarative Performance Observer Origin Trial is to > validate the reliability and stability of this new browser-resident > telemetry system in production. It aims to quantify previously unmeasurable > losses, such as early navigation failures occurring before JavaScript > execution and abrupt session terminations from process crashes, to > establish an accurate reliability baseline. > > *Origin Trial documentation link* > https://github.com/explainers-by-googlers/declarative-performance-observer > > *Risks* > > > *Interoperability and Compatibility* > *No information provided* > > *Gecko*: No signal > > *WebKit*: No signal > > *Web developers*: No signals > > *Other signals*: > > *WebView application risks* > > Does this intent deprecate or change behavior of existing APIs, such that > it has potentially high risk for Android WebView-based applications? > No. > > > *Ongoing technical constraints* > None. > > *Debuggability* > Reports queued via the Reporting API are visible in DevTools. > > *Will this feature be supported on all six Blink platforms (Windows, Mac, > Linux, ChromeOS, Android, and Android WebView)?* > Yes > > *Is this feature fully tested by web-platform-tests > <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?* > Yes > > > *Flag name on about://flags* > declarative-performance-observer > > *Finch feature name* > DeclarativePerformacneObserver > > *Requires code in //chrome?* > False > > *Tracking bug* > https://crbug.com/505208781 > > *Launch bug* > https://launch.corp.google.com/launch/4465220 > > *Estimated milestones* > Origin trial desktop first 151 > Origin trial desktop last 155 > Origin trial Android first 151 > Origin trial Android last 155 > Origin trial WebView first 151 > Origin trial WebView last 155 > > *Link to entry on the Chrome Platform Status* > https://chromestatus.com/feature/6594955352080384?gate=6501511661223936 > > *Links to previous Intent discussions* > Intent to Prototype: > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/69f31432.050a0220.3ab19.0b38.GAE%40google.com > > > This intent message was generated by Chrome Platform Status > <https://chromestatus.com>. > > -- > 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/6a6078b0.68e56e23.371e2.01d5.GAE%40google.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6a6078b0.68e56e23.371e2.01d5.GAE%40google.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/CAFUtAY9G%2BmixZukNka0vPXcN0z5OhEL%2BO23kKQ9DmxvTMfzC6w%40mail.gmail.com.
