Revert "Revert "Allow multiple tags in native clause.""

tools/dom/scripts/generator.py

Index: tools/dom/scripts/generator.py
diff --git a/tools/dom/scripts/generator.py b/tools/dom/scripts/generator.py
index 9499a087bdade2b3b3253d06dbc6d3c1b4972a6c..4ae39dfe7d2b9e820bd5bb8391c8636d1d2de27d 100644
--- a/tools/dom/scripts/generator.py
+++ b/tools/dom/scripts/generator.py
@@ -77,12 +77,20 @@ interface_factories = monitored.Dict('generator.interface_factories', {
 #
 _dart2js_dom_custom_native_specs = monitored.Dict(
       'generator._dart2js_dom_custom_native_specs', {
-    # Decorate the singleton Console object, if present (workers do not have a
-    # console).
-    'Console': "=(typeof console == 'undefined' ? {} : console)",
 
-    # DOMWindow aliased with global scope.
-    'Window': '@*DOMWindow',
+    # Nodes with different tags in different browsers can be listed as multiple
+    # tags here provided there is not conflict in usage (e.g. browser X has tag
+    # T and no other browser has tag T).
+
+    'DOMApplicationCache':
+        'ApplicationCache,DOMApplicationCache,OfflineResourceList',
+
+    'MutationObserver': 'MutationObserver,WebKitMutationObserver',
+
+    'TransitionEvent': 'TransitionEvent,WebKitTransitionEvent',
+
+    'WheelEvent': 'WheelEvent,MouseWheelEvent,MouseScrollEvent',
+
 }, dart2jsOnly=True)
 
 def IsRegisteredType(type_name):
@@ -94,7 +102,7 @@ def MakeNativeSpec(javascript_binding_name):
   else:
     # Make the class 'hidden' so it is dynamically patched at runtime.  This
     # is useful for browser compat.
-    return '*' + javascript_binding_name
+    return javascript_binding_name
 
 
 def MatchSourceFilter(thing):