animation-iteration-count property is a number instead of integer.

[hiikezoe]

This is a revised PR for #14732.
@emilio?

• ./mach build -d does not report any errors
• ./mach test-tidy does not report any errors

• There are tests for these changes

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This change is 

[highfive]

Thanks for the pull request, and welcome! The Servo team is excited to review your changes, and you should hear from @pcwalton (or someone else) soon.

[highfive]

Heads up! This PR modifies the following files:

• @bholley: components/style/properties/longhand/box.mako.rs, components/style/animation.rs
• @emilio: components/style/properties/longhand/box.mako.rs, components/style/animation.rs

[emilio]

This looks great.

One last thing this PR would need to do is to check the animation state more often (see the caller of tick()).

If you don't want to make that part of this PR (which is fine IMO since this doesn't regress functionality), please file an issue and cc me on it.

r=me with any of those

Thanks once again for the patch :)

[hiikezoe]

@emilio can you please tell me about the animation state check in more detail? I don't quite understand what 'more often' means.

[emilio]

So right now we call tick once per animation iteration (which actually is kinda misleading).

With this patch, thinks like animation-iteration-count: 1.5 will parse but won't work I think, because we only check that number once per iteration, and we only increment it by 1.0.

[hiikezoe]

Thank you, @emilio! Now I think I understand the problem. Filed #14858.

[emilio]

Awesome, thanks for filling it!

@bors-servo r+

[bors-servo]

📌 Commit f78cd2c has been approved by emilio

[bors-servo]

⌛ Testing commit f78cd2c with merge 1d9bbfa...

[bors-servo]

☀️ Test successful - android, arm32, arm64, linux-dev, linux-rel-css, linux-rel-wpt, mac-dev-unit, mac-rel-css, mac-rel-wpt1, mac-rel-wpt2, windows-gnu-dev, windows-msvc-dev