Follow up to https://bugzilla.mozilla.org/show_bug.cgi?id=921014, this will require adding rel to the mozbrowser api, plus a warning gaia side when its used

To make it more explicit. Basically we implemented a *fallback* for sites which didn't have rel="icon" with appropriates sizes for homescreen. Now the browser will also look for apple-touch icons in the absence of the "sizes" ones. Because it is something that Web developers should NOT rely on when we will be getting rid of this fallback, we need a message in the Web Console warning them that there are missing icons. Something along: "Warning: The apple-touch icons are being used as a fallback only. They will be deprecated in the future. See @@link to MDN@@" Message to refine.

We should definitely do this. Dale, can you please provide some text for the messages? Thanks!

Yup sorry was supposed to take this as I opened Karl who can be responsible for the message + MDN page, once those are in place I can implement it

(In reply to Dale Harvey (:daleharvey) from comment #3) > Yup sorry was supposed to take this as I opened > > Karl who can be responsible for the message + MDN page, once those are in > place I can implement it The closest we have so far in MDN, we do have: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/link https://developer.mozilla.org/en-US/Add-ons/SDK/Low-Level_APIs/places_favicon https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/mozIAsyncFavicons Maybe I missed it, but if not, we need to write something on how to make a good icon page with best practices. Some input from the bugs and from mathias bynen page. http://mathiasbynens.be/notes/touch-icons I could help create it and I'm pretty sure Chris could help me to straighten it a bit. Chris, which section of the wiki would be good? Chris also for the message, I'm pretty sure you will be able to turn my prose in a better straightforward messge. > Warning: The apple-touch icons are being used as a fallback only. They will be deprecated in the future. See @@link to MDN@@

We have this page: https://developer.mozilla.org/en-US/Apps/Build/installable_apps/Icon_implementation_for_apps Which is at a nascent stage, but is intended to be a one stop shop for everything you'd want to know about icon implementation. I think this sounds like a good place - more content much appreciated!

> https://developer.mozilla.org/en-US/Apps/Build/installable_apps/Icon_implementation_for_apps Wouldnt really be suitable, we only use apple-touch-icons to display icons for web content, if its an installed app then the manifest icons are used. It would need to be a plain Icons for web content article or something

(In reply to Dale Harvey (:daleharvey) from comment #6) > > https://developer.mozilla.org/en-US/Apps/Build/installable_apps/Icon_implementation_for_apps > > Wouldnt really be suitable, we only use apple-touch-icons to display icons > for web content, if its an installed app then the manifest icons are used. > > It would need to be a plain Icons for web content article or something Well, the app zone is supposed to be about web apps in general, including installable (Firefox OS) apps. Although I see I've got this under the "Installable apps" node in the tree. If I moved it out of this node into somewhere more general and included a "General icons for web content" section, it could go in there?

Yup that sounds perfect

(In reply to Dale Harvey (:daleharvey) from comment #8) > Yup that sounds perfect Here you go: https://developer.mozilla.org/en-US/Apps/Build/Icon_implementation_for_apps#General_icons_for_web_apps

(In reply to Dale Harvey (:daleharvey) from comment #8) > Yup that sounds perfect Here you go: https://developer.mozilla.org/en-US/Apps/Build/Icon_implementation_for_apps#General_icons_for_web_apps

Gaia side of this patch, Chris I took the message from https://bugzilla.mozilla.org/show_bug.cgi?id=1045934#c1, mention if it needs changed, also the url is currently TBD

Comment on attachment 8493372 [details] https://github.com/mozilla-b2g/gaia/pull/24307 Seems fine to me. I left a note about localization, not sure if it's important or not as it's just targeted towards developers looks like. Also wonder if we should change the component of this bug.

Gaia: https://github.com/mozilla-b2g/gaia/commit/f3a33a528d194dc631ecc892ba24ea152ed087b4 Gecko: https://hg.mozilla.org/integration/b2g-inbound/rev/40c736b79d1f