Update to servo-glutin 0.4.11

[paulrouget]

This is apparently not trivial.

core-graphics has been updated to 0.3. Which requires serde 0.7. But then webrender doesn't compile anymore:

webrender_traits-e24a580db67dabe6/master/src/api.rs:32:32: 32:32 error: the trait `serde::de::Deserialize` is not implemented for the type
 `core_graphics::font::CGFont` [E0277]
/webrender_traits-e24a580db67dabe6/master/src/api.rs:32 #[derive(Serialize, Deserialize)]

@nox what do you recommend?

[nox]

Bumping core-graphics requires bumping Serde. My Serde bump is almost ready, just blocked by https://github.com/cybergeek94/mime_guess.

[paulrouget]

Addressed: servo/glutin#79