change function signature to get type name via intrinsics

components/script/script_thread.rs

@@ -102,6 +102,7 @@ use servo_url::{ImmutableOrigin, MutableOrigin, ServoUrl};
 use std::cell::Cell;
 use std::collections::{hash_map, HashMap, HashSet};
 use std::default::Default;
+use std::intrinsics;
 use std::ops::Deref;
 use std::option::Option;
 use std::ptr;
@@ -221,7 +222,7 @@ pub struct CancellableRunnable<T: Runnable + Send> {
 }
 
 impl<T: Runnable + Send> Runnable for CancellableRunnable<T> {
-    fn name(&self) -> &'static str { self.inner.name() }
+    fn name(&self) -> &'static str { unsafe { intrinsics::type_name::<Self>() } }
 
     fn is_cancelled(&self) -> bool {
         self.cancelled.as_ref()