Intent to Deprecate: HTMLSourceElement.media IDL attribute

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Philip Jägenstedt

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Feb 4, 2014, 12:03:54 AM2/4/14

to blink-dev

Primary eng (and PM) emails

phi...@opera.com

Summary

Deprecate the HTMLSourceElement.media IDL attribute

Motivation

The media content attribute has already been removed from the resource selection algorithm in http://crbug.com/338197, so we should remove the IDL attribute ASAP.

Usage information from UseCounter

I added the UseCounter HTMLSourceElementMedia very recently, so it will not have good data yet.

However, given the low usage of non-matching media attributes (0.00003%) it seems unlikely that a large proportion of pages will use this IDL attribute and see the deprecation warning. (That would require ~100% of scripts to set media attributes that always match...)

Compatibility Risk

None for deprecation. For removal, pages that test "'media' in source" where source is a HTMLSourceElement or depend on "media.source == ''" before setting it will misbehave. In summary, not very worrying.

Row on feature dashboard?

No.

Requesting approval to remove too?

No, wait until the counter has reached stable.

Adam Barth

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Feb 4, 2014, 12:46:44 AM2/4/14

to Philip Jägenstedt, blink-dev

LGTM

Dimitri Glazkov

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Feb 4, 2014, 12:48:47 AM2/4/14

to Adam Barth, Philip Jägenstedt, blink-dev

LGTM2

Darin Fisher

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Feb 4, 2014, 1:35:15 AM2/4/14

to Dimitri Glazkov, Adam Barth, Philip Jägenstedt, blink-dev

LGTM

On Mon, Feb 3, 2014 at 9:48 PM, Dimitri Glazkov <dgla...@chromium.org> wrote:

LGTM2

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