At the risk of piling on with another question: are these URLs different 
from `file://` scheme URLs?

On Wednesday, January 26, 2022 at 11:41:17 AM UTC+1 Daniel Bratell wrote:

> How confident can we be in the WebView counter? I'd expect this to be used 
> more in WebView than on other platforms.
>
> /Daniel
> On 2022-01-26 01:13, Chris Harrelson wrote:
>
> Hi, could you outline the use counter values for other platforms? Also, is 
> there something special about Android that leads you to want to disable 
> only there?
>
> On Tue, Jan 25, 2022 at 1:58 PM Brianna Goldstein <
> brgoldst...@chromium.org> wrote:
>
>> Primary eng (and PM) emails 
>>
>> brgoldst...@google.com, m...@chromium.com <m...@google.com>, 
>> jadekess...@chromium.com
>>
>> Explainer 
>>
>> Storage partitioning explainer 
>> <https://github.com/wanderview/quota-storage-partitioning/blob/main/explainer.md#storage-apis>
>>
>> Summary 
>>
>> We propose to remove support for loading media via filesystem:// URLs on 
>> Android.
>>
>>
>> Motivation 
>>
>> As part of our storage partitioning efforts, we will need to update 
>> Filesystem URLs to be partitioned by StorageKey rather than by Origin. 
>> Doing this will add complexity since the entire current codepath on Android 
>> is not dependent on Blink where StorageKey currently lives. On Android only 
>> 0.0000001% of URLs loaded by <audio> or <video> use the filesystem:// URL 
>> scheme and we consider this low enough usage to remove support, rather than 
>> do the work of partitioning. Note that this removal is only for Android. On 
>> other platforms there will be no effect and media playback of filesystem:// 
>> URLs will continue to work.
>>
>> Blink component 
>>
>> Blink>Storage 
>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EStorage>
>>
>> Initial public proposal  
>>
>> None
>>
>> TAG review 
>>
>> None
>>
>> TAG review status 
>>
>> N/A
>>
>> Interoperability and Compatibility Risk Interoperability risk: 
>>
>> The filesystem:// URL scheme was never widely adopted and is only 
>> implemented by Chrome. Therefore there should be no interoperability risks 
>> associated with this feature depreciation.
>>
>> Compatibility risk: 
>>
>> This feature is very low usage as only 0.0000001% of URLs loaded by 
>> <audio> or <video> use the filesystem:// URL scheme. Therefore the expected 
>> compatibility risk is very low.
>>
>> Alternative implementation suggestion for web developers 
>>
>> Developers can continue to load media from other schemes (http, https, 
>> blob, file, etc.).
>>
>> Usage information from UMA 
>>
>> Android Chrome (Browser App): 0.0000001%
>>
>> Android Webview: 0.0%
>>
>> Tracking Bug 
>>
>> https://bugs.chromium.org/p/chromium/issues/detail?id=1258029
>>
>> Entry on the feature dashboard 
>>
>> https://chromestatus.com/feature/5632429577469952
>>
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>> .
>>
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