From eb47185d58cab0e0257a45f5bebe8ce37feb16cc Mon Sep 17 00:00:00 2001
From: Tetsuharu OHZEKI <saneyuki.snyk@gmail.com>
Date: Tue, 21 Jul 2015 00:46:18 +0900
Subject: [PATCH] Implement Window.trap() to trigger a breakpoint trap

---
 components/script/dom/webidls/Window.webidl | 1 +
 components/script/dom/window.rs             | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/components/script/dom/webidls/Window.webidl b/components/script/dom/webidls/Window.webidl
index 60cc45f5161..24a337988ad 100644
--- a/components/script/dom/webidls/Window.webidl
+++ b/components/script/dom/webidls/Window.webidl
@@ -126,6 +126,7 @@ partial interface Window {
   readonly attribute Console console;
   void debug(DOMString arg);
   void gc();
+  void trap();
 };
 Window implements OnErrorEventHandlerForWindow;
 
diff --git a/components/script/dom/window.rs b/components/script/dom/window.rs
index 0d5029304bd..5c1977626b2 100644
--- a/components/script/dom/window.rs
+++ b/components/script/dom/window.rs
@@ -47,7 +47,7 @@ use net_traits::image_cache_task::{ImageCacheChan, ImageCacheTask};
 use net_traits::storage_task::{StorageTask, StorageType};
 use profile_traits::mem;
 use util::geometry::{self, Au, MAX_RECT};
-use util::opts;
+use util::{breakpoint, opts};
 use util::str::{DOMString,HTML_SPACE_CHARACTERS};
 
 use euclid::{Point2D, Rect, Size2D};
@@ -482,6 +482,10 @@ impl<'a> WindowMethods for &'a Window {
         }
     }
 
+    fn Trap(self) {
+        breakpoint();
+    }
+
     fn Btoa(self, btoa: DOMString) -> Fallible<DOMString> {
         base64_btoa(btoa)
     }