Merge pull request #498 from Polymer/revert-497-platform_issue_83

Revert "restore isLoadLikeEvent"

src/wrappers/events.js

@@ -237,19 +237,6 @@
     }
   }
 
-
-  function isLoadLikeEvent(event) {
-    switch (event.type) {
-      // http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#events-and-the-window-object
-      case 'load':
-      // http://www.whatwg.org/specs/web-apps/current-work/multipage/browsers.html#unloading-documents
-      case 'beforeunload':
-      case 'unload':
-        return true;
-    }
-    return false;
-  }
-
   function dispatchEvent(event, originalWrapperTarget) {
     if (currentlyDispatchingEvents.get(event))
       throw new Error('InvalidStateError');
@@ -267,11 +254,12 @@
     // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-end.html#the-end
     var overrideTarget;
     var win;
+    var type = event.type;
 
     // Should really be not cancelable too but since Firefox has a bug there
     // we skip that check.
     // https://bugzilla.mozilla.org/show_bug.cgi?id=999456
-    if (isLoadLikeEvent(event) && !event.bubbles) {
+    if (type === 'load' && !event.bubbles) {
       var doc = originalWrapperTarget;
       if (doc instanceof wrappers.Document && (win = doc.defaultView)) {
         overrideTarget = doc;
@@ -286,7 +274,7 @@
       } else {
         eventPath = getEventPath(originalWrapperTarget, event);
 
-        if (!isLoadLikeEvent(event)) {
+        if (event.type !== 'load') {
           var doc = eventPath[eventPath.length - 1];
           if (doc instanceof wrappers.Document)
             win = doc.defaultView;

test/js/events.js

@@ -928,7 +928,6 @@ test('retarget order (multiple shadow roots)', function() {
   });
 
   htmlTest('html/on-load-test.html');
-  htmlTest('html/on-unload-test.html');
 
   test('event wrap round trip', function() {
     var e = new Event('x');