MutationObserver

lib/dom/idl/dart/dart.idl

Index: lib/dom/idl/dart/dart.idl
diff --git a/lib/dom/idl/dart/dart.idl b/lib/dom/idl/dart/dart.idl
index 326bc1519204e220e24778d9f9b44f247c519946..90c6da71c1733ea45c05477201e3daca08a8ac16 100644
--- a/lib/dom/idl/dart/dart.idl
+++ b/lib/dom/idl/dart/dart.idl
@@ -280,3 +280,16 @@ module svg {
     [StrictTypeChecking, Custom] attribute float value;
   };
 }
+
+module core {
+  [Supplemental,
+   CustomConstructor,
+   // Provide missing constructor signature.
+   Constructor(MutationCallback callback)]
+  interface MutationObserver {
+    // Rename 'observe' so we can define a new 'observe' API that calls the
+    // original.
+    [DartName=_observe] void observe(in Node target, in Dictionary options)
+        raises(DOMException);
+  };
+}