LGTM2

On Monday, July 27, 2026 at 9:52:37 AM UTC-7 Mike Taylor wrote:

> (Also, can you please request the privacy, security, enterprise, etc bits 
> in your chromestatus entry?)
> On 7/27/26 12:51 p.m., Mike Taylor wrote:
>
> Thanks for doing the work to catch us up to other engines - LGTM1
> On 7/24/26 5:04 p.m., Sangbaek Park wrote:
>
> Contact emails [email protected]
>
> Specification 
> https://w3c.github.io/media-capabilities/#dom-keysystemtrackconfiguration-encryptionscheme
>
> Summary Adds the encryptionScheme attribute to the 
> KeySystemTrackConfiguration dictionary used in 
> navigator.mediaCapabilities.decodingInfo(). This allows web applications 
> to query whether a specific encryption scheme (such as 'cenc' or 'cbcs') is 
> supported.
>
> This feature is already approved by the W3C spec and the underlying 
> backend implementation in Chromium already exists. This launch is purely to 
> plumb the encryptionScheme property from the Blink IDL layer to the 
> existing backend.
>
> Blink component Blink>Media
>
> Search tags media-capabilities, decodingInfo, encryptionScheme, eme, drm, 
> cenc, cbcs
>
> TAG review None. This is a trivial IDL plumbing update for a standard 
> that is already shipped by other vendors.
>
> TAG review status Not applicable
>
> Risks Interoperability and Compatibility None. We are simply exposing the 
> encryptionScheme property to match the W3C spec. Edge and Firefox have 
> already implemented this and pass the relevant tests.
>
> *Gecko:* Shipped *WebKit:* Not Supported *Web developers:* Positive
>
> Debuggability N/A
>
> 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? Yes. The 
> web-platform-tests were recently updated to robustly verify this plumbing.
>
> As shown on the main WPT dashboard, Chrome Stable is currently lagging 
> behind Edge and Firefox: 
> https://wpt.fyi/results/media-capabilities/decodingInfoEncryptedMedia.https.html?label=master&product=chrome%5Bstable%5D&product=edge%5Bexperimental%5D&product=firefox%5Bexperimental%5D&product=safari%5Bexperimental%5D&aligned
>
> However, the plumbing is already verified to work in Chrome Canary (where 
> the feature flag is enabled), as shown here: 
> https://wpt.fyi/results/media-capabilities/decodingInfoEncryptedMedia.https.html?label=experimental&label=master&aligned
>
> This launch simply flips the flag to stable to catch up.
>
> Requires code in //chrome? False
>
> Tracking bug https://crbug.com/498284510
>
> Link to entry on the Chrome Platform Status 
> https://chromestatus.com/feature/4644898109259776
>
>

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