On 6/24/26 11:22 a.m., Alex Russell wrote:
Hey Michal,
We discussed this morning at API OWNERS and appreciate you bringing
this to us. From a compat perspective, the Finch'd rollout plan sounds
good, and we wish you luck.
From a Blink process perspective, we think this is more of an
Intent-to-Ship, and are agreeing to treat it as such. With that
caveat, and with the Finch rollout plan in play, LGTM1.
LGTM2 - thanks for the careful rollout plan. Good luck!
On Wednesday, June 24, 2026 at 5:26:32 AM UTC-7 Michał Hoffmann wrote:
Sorry for the confusion! To clarify:
- The experimenting on Stable could start right away - so a week
after 100% stable release of M150 according to the best Finch
practices.
- Once we have reliable data on 1% - so a week or two into the
experimentation, I want to boost it to 10% of stable, as it's hard
to investigate incognito effects on low traffic. The 10%
experiment would run for another 2 weeks of data unless any
concerns arise.
- The full release will be in M151, after both stages of an
experiment, provided no negative signals on compat.
Does that answer your question?
On Tuesday, June 23, 2026 at 9:02:49 PM UTC+2 Mike Taylor wrote:
Thanks Michal - but I'm a little confused.
Dan is asking which milestones you would like to run a 1%
experiment on (or if you're planning to run an Origin Trial -
and it looks like you aren't) to flush out any compat issues.
Are you saying you would like to launch in M151, or start the
1% experiment in 151? If the former, for how many milestones
(this is Dan's question)?
On 6/23/26 11:00 a.m., 'Michał Hoffmann' via blink-dev wrote:
The planned timeline is a usual finch deployment with a full
release in M151. The experiment for 50% of Canary+Dev+Beta is
already up and running for some time with no breakages detected.
I was asked for an explicit I2E (a thread mentioned in the
summary) before experimenting on stable. The usual rollout is
planned, however since the change is Incognito only I wonder
if starting with more than 1% of stable would reveal more
about the possible effects of the feature. If so - I assume
I'd need more approvals from owners there.
Let me know what's the best approach for you
Michał
On Monday, June 22, 2026 at 8:52:52 PM UTC+2 Dan Clark wrote:
Can you clarify the planned timeline for the experiment?
Is my understanding correct that the idea is to roll this
out via finch, rather than asking people to opt-in to an
Origin Trial?
-- Dan
On Thursday, June 18, 2026 at 6:27:57 AM UTC-7
Chromestatus wrote:
*Contact emails*
[email protected], [email protected]
*Explainer*
https://github.com/explainers-by-googlers/static-storage-quota
<https://github.com/explainers-by-googlers/static-storage-quota>
*Specification*
/No information provided/
*Summary*
Fixes a bug in the predictable-storage-quota that
allows Incognito mode to be detected. A change
introduced recently to Stable, buckets the result of
the StorageManager's estimate API for sites that do
not have unlimited storage permission to max(10Gib,
ceil(actual_quota_in_Gib)) + usage. However, in
incognito mode, the actual quota value is based on a
fraction of available RAM, instead of the disk space
- providing an Incognito detection surface. This
change fixes the value of this API for Incognito Mode
to the maximal bucket of: usage + 10Gib. Discussion
on the original feature available here:
https://groups.google.com/a/chromium.org/g/blink-dev/c/7q0YGQNVkjs/m/mpYkQVWpAQAJ
<https://groups.google.com/a/chromium.org/g/blink-dev/c/7q0YGQNVkjs/m/mpYkQVWpAQAJ>
This is a new Chromestatus in place of an original
PSA, as this launch should start with an I2E to
ensure the breakage risk is properly addressed. See
https://groups.google.com/a/chromium.org/g/blink-dev/c/00aHBCiUGzo/m/B0Dq06SFAQAJ
<https://groups.google.com/a/chromium.org/g/blink-dev/c/00aHBCiUGzo/m/B0Dq06SFAQAJ>.
*Blink component*
Blink>Storage>Quota
<https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EStorage%3EQuota%22>
*Web Feature ID*
storage-manager
<https://webstatus.dev/features/storage-manager>
*Search tags*
incognito <http:///features#tags:incognito>, quota
<http:///features#tags:quota>, storage
<http:///features#tags:storage>
*TAG review*
/No information provided/
*TAG review status*
Pending
*Goals for experimentation*
None
*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 information provided/
*Ongoing technical constraints*
/No information provided/
*Debuggability*
/No information provided/
*Will this feature be supported on all six Blink
platforms (Windows, Mac, Linux, ChromeOS, Android,
and Android WebView)?*
No
*Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?*
No
*Flag name on about://flags*
/No information provided/
*Finch feature name*
kIncognitoStaticStorageQuota
*Requires code in //chrome?*
False
*Tracking bug*
https://issues.chromium.org/issues/464484739
<https://issues.chromium.org/issues/464484739>
*Estimated milestones*
No milestones specified
*Link to entry on the Chrome Platform Status*
https://chromestatus.com/feature/5117411264167936?gate=5943068999155712
<https://chromestatus.com/feature/5117411264167936?gate=5943068999155712>
This intent message was generated by Chrome Platform
Status <https://chromestatus.com>.
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