Implement WebGLRenderingContext.getActiveUniform()

[saurvs]

Fixes #10397

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This change is

[highfive]

Heads up! This PR modifies the following files:

• @KiChjang: components/script/dom/webglrenderingcontext.rs, components/script/dom/webidls/WebGLRenderingContext.webidl, components/script/dom/webglprogram.rs
• @emilio: components/script/dom/webglrenderingcontext.rs, components/script/dom/webglprogram.rs

[highfive]

Warning

• These commits modify script code, but no tests are modified. Please consider adding a test!

[emilio]

Thanks! Looks great, but you still have to update some more lockfiles :)

./mach cargo-update -p webrender_traits should do it if i'm not wrong.

[saurvs]

I did that, but it re-added byteorder 0.4.2, and there's also byteorder 0.5.1, so ./mach test-tidy complains.

[saurvs]

I think we need to upgrade every crate servo depends on to byteorder 0.5.1

[emilio]

@saurvs: we can add it to the exception list if there's a lot of crates, but updating the others might be preferred.

[saurvs]

Well there are 7 crates bincode image immeta ipc-channel jpeg-decoder wayland-window websocket, so I guess I can open PR's for them and see if they get updated soon.

[emilio]

Some of them are not from the servo org, so... What if we open a tracking issue, add it to the exception list temporarily, open a bunch of PRs to update it, and when that issue gets solved (that is, all those PRs merged), we remove it from the exception list?

@jdm Would you agree with this? Or should we open PRs and wait?

[saurvs]

Oh yeah, I just tried bumping the version for byteorder in image, and it looks like 0.5 breaks a lot. So I guess it might take a while to update all the crates.

[jdm]

Yeah, if it's blocking us from other useful work we can add an exception for it.

[saurvs]

Ok done.

[emilio]

Filled #10437 to keep track of this.

@bors-servo: r+

[bors-servo]

📌 Commit 56eef10 has been approved by emilio

[bors-servo]

⌛ Testing commit 56eef10 with merge 4cc241c...

[bors-servo]

☀️ Test successful - android, arm32, arm64, linux-dev, linux-rel, mac-dev-unit, mac-rel-css, mac-rel-wpt