Remove servo_url dependency for geckolib

It seems mod attr is not used for geckolib at all, and that is the
only place where servo_url is still referenced for geckolib, so we
can just remove it.

components/style/Cargo.toml

@@ -18,7 +18,7 @@ use_bindgen = ["bindgen", "regex"]
 servo = ["serde/unstable", "serde", "serde_derive", "heapsize", "heapsize_derive",
          "style_traits/servo", "servo_atoms", "html5ever-atoms",
          "cssparser/heapsize", "cssparser/serde", "encoding",
-         "rayon/unstable", "servo_url/servo"]
+         "rayon/unstable", "servo_url", "servo_url/servo"]
 testing = []
 
 [dependencies]
@@ -52,7 +52,7 @@ servo_atoms = {path = "../atoms", optional = true}
 servo_config = {path = "../config"}
 smallvec = "0.3"
 style_traits = {path = "../style_traits"}
-servo_url = {path = "../url"}
+servo_url = {path = "../url", optional = true}
 time = "0.1"
 unicode-segmentation = "1.0"
 

components/style/attr.rs

@@ -19,7 +19,7 @@ use std::str::FromStr;
 use std::sync::Arc;
 use str::{HTML_SPACE_CHARACTERS, read_exponent, read_fraction};
 use str::{read_numbers, split_commas, split_html_space_chars};
-#[cfg(not(feature = "gecko"))] use str::str_join;
+use str::str_join;
 use values::specified::Length;
 
 // Duplicated from script::dom::values.
@@ -166,7 +166,6 @@ impl AttrValue {
         AttrValue::TokenList(tokens, atoms)
     }
 
-    #[cfg(not(feature = "gecko"))] // Gecko can't borrow atoms as UTF-8.
     pub fn from_atomic_tokens(atoms: Vec<Atom>) -> AttrValue {
         // TODO(ajeffrey): effecient conversion of Vec<Atom> to String
         let tokens = String::from(str_join(&atoms, "\x20"));
@@ -335,7 +334,6 @@ impl AttrValue {
     }
 }
 
-#[cfg(not(feature = "gecko"))] // Gecko can't borrow atoms as UTF-8.
 impl ::std::ops::Deref for AttrValue {
     type Target = str;
 

components/style/lib.rs

@@ -71,7 +71,7 @@ extern crate selectors;
 #[cfg(feature = "servo")] #[macro_use] extern crate serde_derive;
 #[cfg(feature = "servo")] #[macro_use] extern crate servo_atoms;
 extern crate servo_config;
-extern crate servo_url;
+#[cfg(feature = "servo")] extern crate servo_url;
 extern crate smallvec;
 #[macro_use]
 extern crate style_traits;
@@ -81,7 +81,7 @@ extern crate unicode_segmentation;
 
 pub mod animation;
 #[allow(missing_docs)] // TODO.
-pub mod attr;
+#[cfg(feature = "servo")] pub mod attr;
 pub mod bezier;
 pub mod bloom;
 pub mod cache;