Object.observe: generate change records for named properties.

src/handles.h

Index: src/handles.h
diff --git a/src/handles.h b/src/handles.h
index a1d88c2f8ffc315eef10b083f3d9fd1345680a4b..77aebf773220b658baae8e86231665f82a70be91 100644
--- a/src/handles.h
+++ b/src/handles.h
@@ -95,6 +95,13 @@ class Handle {
 };
 
 
+// Convenience wrapper.
+template<class T>
+inline Handle<T> handle(T* t) {
+  return Handle<T>(t);
+}
+
+
 class DeferredHandles;
 class HandleScopeImplementer;