Implement a resource_task getter on GlobalRef.

This is needed to fetch resources on all threads.

src/components/script/dom/bindings/global.rs

@@ -8,9 +8,10 @@ use dom::bindings::js::{JS, JSRef, Root};
 use dom::bindings::utils::{Reflectable, Reflector};
 use dom::workerglobalscope::WorkerGlobalScope;
 use dom::window::Window;
-use page::Page;
 use script_task::ScriptChan;
 
+use servo_net::resource_task::ResourceTask;
+
 use js::jsapi::JSContext;
 
 use url::Url;
@@ -46,8 +47,11 @@ impl<'a> GlobalRef<'a> {
         }
     }
 
-    pub fn page<'b>(&'b self) -> &'b Page {
-        self.as_window().page()
+    pub fn resource_task(&self) -> ResourceTask {
+        match *self {
+            Window(ref window) => window.page().resource_task.deref().clone(),
+            Worker(ref worker) => worker.resource_task().clone(),
+        }
     }
 
     pub fn get_url(&self) -> Url {

src/components/script/dom/dedicatedworkerglobalscope.rs

@@ -65,7 +65,8 @@ impl DedicatedWorkerGlobalScope {
             };
 
             let (_js_runtime, js_context) = ScriptTask::new_rt_and_cx();
-            let global = DedicatedWorkerGlobalScope::new(js_context.clone()).root();
+            let global = DedicatedWorkerGlobalScope::new(
+                js_context.clone(), resource_task).root();
             match js_context.evaluate_script(
                 global.reflector().get_jsobject(), source, filename.to_str(), 1) {
                 Ok(_) => (),

src/components/script/dom/worker.rs

@@ -39,7 +39,7 @@ impl Worker {
             Err(_) => return Err(Syntax),
         };
 
-        let resource_task = global.page().resource_task.deref().clone();
+        let resource_task = global.resource_task();
         DedicatedWorkerGlobalScope::run_worker_scope(worker_url, resource_task);
         Ok(Worker::new(global))
     }

src/components/script/dom/workerglobalscope.rs

@@ -45,6 +45,10 @@ impl WorkerGlobalScope {
     pub fn get_cx(&self) -> *mut JSContext {
         self.js_context.ptr
     }
+
+    pub fn resource_task<'a>(&'a self) -> &'a ResourceTask {
+        &*self.resource_task
+    }
 }
 
 pub trait WorkerGlobalScopeMethods {

src/components/script/dom/xmlhttprequest.rs

@@ -486,7 +486,7 @@ impl<'a> XMLHttpRequestMethods<'a> for JSRef<'a, XMLHttpRequest> {
         }
 
         let global = self.global.root();
-        let resource_task = global.root_ref().page().resource_task.deref().clone();
+        let resource_task = global.root_ref().resource_task();
         let mut load_data = LoadData::new(self.request_url.deref().borrow().clone());
         load_data.data = extracted;