Revert "Patched in Dartium JsInterop"

tools/dom/templates/html/impl/impl_DOMException.darttemplate

Index: tools/dom/templates/html/impl/impl_DOMException.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_DOMException.darttemplate b/tools/dom/templates/html/impl/impl_DOMException.darttemplate
index 33343c95b08bbcfea2e5a4507ada590491d7852b..be8c36c2b11232a2ceb3f80b5b724d81aa9eddf6 100644
--- a/tools/dom/templates/html/impl/impl_DOMException.darttemplate
+++ b/tools/dom/templates/html/impl/impl_DOMException.darttemplate
@@ -40,36 +40,7 @@ $if DART2JS
     return errorName;
   }
 $endif
-$if JSINTEROP
-  String _name;
-  String _message;
-
-  DomException.jsInterop(String m) {
-    var name_index = m.indexOf(': ');
-    if (name_index < 0) {
-      _name = "";
-      _message = m;
-    } else {
-      _name = m.substring(0, name_index);
-      _message = m.substring(name_index + 1).trim();
-    }
-  }
-
-  @DomName('DOMException.message')
-  @DocsEditable()
-  String get message => _message;
-
-  @DomName('DOMException.name')
-  @DocsEditable()
-  String get name => _name;
-
-  @DomName('DOMException.toString')
-  @DocsEditable()
-  String toString() => "${_name}: $_message";
-
-$else
 $!MEMBERS
-$endif
 $if DART2JS
   @DomName('DOMException.toString')
   @DocsEditable()