Roll IDL to Dartium37 (r181268)

core/frame/WindowEventHandlers.idl

Index: core/frame/WindowEventHandlers.idl
diff --git a/core/frame/WindowEventHandlers.idl b/core/frame/WindowEventHandlers.idl
index c2685574d8245930652dd3035b6d61a02e2fdf01..95de525822a77f31104c7d6f7c9cd93e67ab7b4f 100644
--- a/core/frame/WindowEventHandlers.idl
+++ b/core/frame/WindowEventHandlers.idl
@@ -27,14 +27,18 @@
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+// http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#windoweventhandlers
+
 [
-    NoInterfaceObject,
-    ImplementedAs=DOMWindowEventHandlers
+    ImplementedAs=DOMWindowEventHandlers,
+    LegacyTreatAsPartialInterface,
+    NoInterfaceObject, // Always used on target of 'implements'
 ] interface WindowEventHandlers {
     //attribute EventHandler onafterprint;
     //attribute EventHandler onbeforeprint;
     attribute EventHandler onbeforeunload;
     attribute EventHandler onhashchange;
+    attribute EventHandler onlanguagechange;
     attribute EventHandler onmessage;
     attribute EventHandler onoffline;
     attribute EventHandler ononline;