Stop using servo UA stylesheets for geckolib.

Gecko will provide these. This also removes the need to reference
the servo resource directory.

components/style/selector_impl.rs

@@ -19,7 +19,7 @@ pub trait SelectorImplExt : SelectorImpl + Sized {
 
     fn get_user_or_user_agent_stylesheets() -> &'static [Stylesheet<Self>];
 
-    fn get_quirks_mode_stylesheet() -> &'static Stylesheet<Self>;
+    fn get_quirks_mode_stylesheet() -> Option<&'static Stylesheet<Self>>;
 }
 
 #[derive(Clone, Debug, PartialEq, Eq, HeapSizeOf, Hash)]
@@ -135,7 +135,7 @@ impl SelectorImplExt for ServoSelectorImpl {
     }
 
     #[inline]
-    fn get_quirks_mode_stylesheet() -> &'static Stylesheet<Self> {
+    fn get_quirks_mode_stylesheet() -> Option<&'static Stylesheet<Self>> {
-        &*QUIRKS_MODE_STYLESHEET
+        Some(&*QUIRKS_MODE_STYLESHEET)
     }
 }

components/style/selector_matching.rs

@@ -146,7 +146,9 @@ impl<Impl: SelectorImplExt> Stylist<Impl> {
         }
 
         if self.quirks_mode {
-            self.add_stylesheet(&Impl::get_quirks_mode_stylesheet());
+            if let Some(s) = Impl::get_quirks_mode_stylesheet() {
+                self.add_stylesheet(s);
+            }
         }
 
         for ref stylesheet in doc_stylesheets.iter() {

ports/geckolib/glue.rs

@@ -22,7 +22,6 @@ use style::stylesheets::Origin;
 use traversal::RecalcStyleOnly;
 use url::Url;
 use util::arc_ptr_eq;
-use util::resource_files::set_resources_path;
 use wrapper::{GeckoDocument, GeckoNode, NonOpaqueStyleData};
 
 /*
@@ -42,10 +41,6 @@ pub extern "C" fn Servo_RestyleDocument(doc: *mut RawGeckoDocument, raw_data: *m
     };
     let data = unsafe { &mut *(raw_data as *mut PerDocumentStyleData) };
 
-    // FIXME(bholley): Don't hardcode resources path. We may want to use Gecko's UA stylesheets
-    // anyway.
-    set_resources_path(Some("/files/mozilla/stylo/servo/resources/".to_owned()));
-
     let _needs_dirtying = data.stylist.update(&data.stylesheets, data.stylesheets_changed);
     data.stylesheets_changed = false;
 

ports/geckolib/selector_impl.rs

@@ -10,7 +10,6 @@ use style::error_reporting::StdoutErrorReporter;
 use style::selector_impl::SelectorImplExt;
 use style::stylesheets::Origin;
 use url::Url;
-use util::resource_files::read_resource_file;
 
 pub type Stylist = style::selector_matching::Stylist<GeckoSelectorImpl>;
 pub type Stylesheet = style::stylesheets::Stylesheet<GeckoSelectorImpl>;
@@ -19,56 +18,6 @@ pub type PrivateStyleData = style::data::PrivateStyleData<GeckoSelectorImpl>;
 
 pub struct GeckoSelectorImpl;
 
-// TODO: Replace this with Gecko's stylesheets
-lazy_static! {
-    static ref USER_OR_USER_AGENT_STYLESHEETS: Vec<Stylesheet> = {
-        let mut stylesheets = vec!();
-        // FIXME: presentational-hints.css should be at author origin with zero specificity.
-        //        (Does it make a difference?)
-        for &filename in &["user-agent.css", "servo.css", "presentational-hints.css"] {
-            match read_resource_file(&[filename]) {
-                Ok(res) => {
-                    let ua_stylesheet = Stylesheet::from_bytes(
-                        &res,
-                        Url::parse(&format!("chrome:///{:?}", filename)).unwrap(),
-                        None,
-                        None,
-                        Origin::UserAgent,
-                        box StdoutErrorReporter);
-                    stylesheets.push(ua_stylesheet);
-                }
-                Err(..) => {
-                    error!("Failed to load UA stylesheet {}!", filename);
-                    process::exit(1);
-                }
-            }
-        }
-
-        stylesheets
-    };
-}
-
-lazy_static! {
-    static ref QUIRKS_MODE_STYLESHEET: Stylesheet = {
-        match read_resource_file(&["quirks-mode.css"]) {
-            Ok(res) => {
-                Stylesheet::from_bytes(
-                    &res,
-                    url!("chrome:///quirks-mode.css"),
-                    None,
-                    None,
-                    Origin::UserAgent,
-                    box StdoutErrorReporter)
-            },
-            Err(..) => {
-                error!("Stylist failed to load 'quirks-mode.css'!");
-                process::exit(1);
-            }
-        }
-    };
-}
-
-
 #[derive(Clone, Debug, PartialEq, Eq, HeapSizeOf, Hash)]
 pub enum PseudoElement {
     Before,
@@ -294,14 +243,13 @@ impl SelectorImplExt for GeckoSelectorImpl {
         pc.state_flag()
     }
 
-    // FIXME: Don't use Servo's UA stylesheets, use Gecko's instead
     #[inline]
     fn get_user_or_user_agent_stylesheets() -> &'static [Stylesheet] {
-        &*USER_OR_USER_AGENT_STYLESHEETS
+        &[]
     }
 
     #[inline]
-    fn get_quirks_mode_stylesheet() -> &'static Stylesheet {
+    fn get_quirks_mode_stylesheet() -> Option<&'static Stylesheet> {
-        &*QUIRKS_MODE_STYLESHEET
+        None
     }
 }