I have again updated the spreadsheet of stable feature flags
<https://docs.google.com/spreadsheets/d/1OoQOp19o0dtuWXyyQJdBCAAt_6sq4PpvdRszGb0lNmo/edit>
with
a new tab.  I've updated the old data (as of a few weeks ago), and I've
added features up through those that shipped to stable in M140.

As before, please take a look to see if there are feature flags you can
remove because they're no longer needed.

-David

On Wed, Jun 25, 2025 at 5:18 PM David Baron <[email protected]> wrote:

> I have again updated the spreadsheet of stable feature flags
> <https://docs.google.com/spreadsheets/d/1OoQOp19o0dtuWXyyQJdBCAAt_6sq4PpvdRszGb0lNmo/edit>
> with a new tab.  I've updated the old data, and I've added features that
> shipped to stable in M132 through M137.
>
> As before, please take a look to see if there are feature flags you can
> remove because they're no longer needed.
>
> -David
>
> On Fri, Nov 22, 2024 at 10:47 AM David Baron <[email protected]> wrote:
>
>> I have updated the spreadsheet of stable feature flags
>> <https://docs.google.com/spreadsheets/d/1OoQOp19o0dtuWXyyQJdBCAAt_6sq4PpvdRszGb0lNmo/edit>
>>  with
>> another tab that includes features that shipped to stable in M128 through
>> M131 and removes flags that have been removed since my last update.  (Note
>> that M131 shipped very recently so many of the flags might not be ready to
>> remove quite yet; I gave the text for the M131 features less contrast as a
>> reminder of this.)
>>
>> As before, please have a look to see if there are feature flags that you
>> can remove because they're no longer needed.
>>
>> -David
>>
>> On Fri, Aug 23, 2024 at 12:18 PM David Baron <[email protected]> wrote:
>>
>>> I have again updated the spreadsheet of stable feature flags
>>> <https://docs.google.com/spreadsheets/d/1OoQOp19o0dtuWXyyQJdBCAAt_6sq4PpvdRszGb0lNmo/edit>
>>>  with
>>> a new tab that includes features that shipped to stable in M123 through
>>> M127, and to remove flags that have been removed since my last update.
>>>
>>> As before, please have a look to see if there are feature flags that you
>>> can remove because they're no longer needed.
>>>
>>> -David
>>>
>>> On Thu, Mar 21, 2024 at 8:51 PM David Baron <[email protected]> wrote:
>>>
>>>> I've updated the spreadsheet of stable feature flags
>>>> <https://docs.google.com/spreadsheets/d/1OoQOp19o0dtuWXyyQJdBCAAt_6sq4PpvdRszGb0lNmo/edit>
>>>> to include features that shipped to stable in M121 and M122, and to remove
>>>> flags that have been removed since my last update.  (I left the previous
>>>> version of the sheet in the second tab.)  As before, hopefully this will
>>>> prompt some removal of flags that we don't need any longer.
>>>>
>>>> -David
>>>>
>>>> On Fri, Jan 12, 2024 at 11:39 AM David Baron <[email protected]>
>>>> wrote:
>>>>
>>>>> Since we've recently been more careful about creating feature flags
>>>>> for changes that have the possibility of breaking content, we've also been
>>>>> creating more feature flags than before.  This means that we're also
>>>>> creating a larger number of feature flags that have shipped to stable, 
>>>>> been
>>>>> shown to be safe, and have served their purpose.  Many of these flags (and
>>>>> associated flag-controlled code) can hopefully be removed.
>>>>>
>>>>> I made a spreadsheet of feature flags that have been shipped in stable
>>>>> <https://docs.google.com/spreadsheets/d/1OoQOp19o0dtuWXyyQJdBCAAt_6sq4PpvdRszGb0lNmo/edit>
>>>>>  along
>>>>> with the stable milestone they shipped in.  The sheet should be publicly
>>>>> viewable and editable by any Chromium committer.  The sheet itself has
>>>>> notes about how I made it (briefly: mostly with
>>>>> third_party/blink/tools/list_stable_features.py).
>>>>>
>>>>> This sheet is presented as data to help folks remember to remove flags
>>>>> that they were intending to remove.  I'm sure there are a bunch of flags
>>>>> listed that shouldn't be removed, but also plenty that can be removed
>>>>> (either now or soon).
>>>>>
>>>>> Feel free to add notes to the sheet, update owners as needed, and to
>>>>> write CLs to remove flags that we don't need anymore.
>>>>>
>>>>> -David
>>>>>
>>>>

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