added time to interactive metrics, refactored metrics to use traits

changed task macro to take pipeline info

components/script/dom/window.rs

@@ -304,6 +304,11 @@ impl Window {
         }
     }
 
+    /// Get a sender to the time profiler thread.
+    pub fn time_profiler_chan(&self) -> &TimeProfilerChan {
+        self.globalscope.time_profiler_chan()
+    }
+
     pub fn origin(&self) -> &MutableOrigin {
         self.globalscope.origin()
     }
@@ -1040,6 +1045,10 @@ impl Window {
         }
     }
 
+    pub fn get_navigation_start(&self) -> f64 {
+        self.navigation_start_precise.get()
+    }
+
     /// Cancels all the tasks associated with that window.
     ///
     /// This sets the current `ignore_further_async_events` sentinel value to
@@ -1854,6 +1863,10 @@ impl Window {
             WindowBinding::Wrap(runtime.cx(), win)
         }
     }
+
+    pub fn pipeline_id(&self) -> Option<PipelineId> {
+        Some(self.upcast::<GlobalScope>().pipeline_id())
+    }
 }
 
 fn should_move_clip_rect(clip_rect: Rect<Au>, new_viewport: Rect<f32>) -> bool {
@@ -1962,6 +1975,7 @@ impl Window {
         let _ = self.script_chan.send(CommonScriptMsg::Task(
             ScriptThreadEventCategory::DomEvent,
             Box::new(self.task_canceller().wrap_task(task)),
+            self.pipeline_id()
         ));
     }
 }