Allow more objects to be treated as ArrayBuffer and ArrayBufferView.

tools/dom/scripts/htmldartgenerator.py

Index: tools/dom/scripts/htmldartgenerator.py
diff --git a/tools/dom/scripts/htmldartgenerator.py b/tools/dom/scripts/htmldartgenerator.py
index 2f13d48413ebdeb932b5feeb23da072e6ce06d18..7a8ad33bd616b45cb55998ab8445b1c16dfdf9e9 100644
--- a/tools/dom/scripts/htmldartgenerator.py
+++ b/tools/dom/scripts/htmldartgenerator.py
@@ -231,6 +231,25 @@ class HtmlDartGenerator(object):
         argument = signatures[signature_index][i]
         parameter_name = parameter_names[i]
         test_type = self._DartType(argument.type.id)
+        # TODO(antonm): temporary ugly hack to be able to work with existing
+        # typed array types as well as dart:typeddata types until
+        # the transition to dart:typeddata is complete for both dart2js
+        # and dartium.
+        from systemnative import DartiumBackend
+        if isinstance(self, DartiumBackend):
+          if argument.type.id == 'ArrayBufferView':
+            checks.append(
+                '(%(name)s is ArrayBufferView '
+                '|| %(name)s is _typeddata.TypedData '
+                '|| %(name)s == null)' % {'name': parameter_name})
+            continue
+          if argument.type.id == 'ArrayBuffer':
+            checks.append(
+                '(%(name)s is ArrayBuffer '
+                '|| %(name)s is _typeddata.ByteBuffer '
+                '|| %(name)s == null)' % {'name': parameter_name})
+            continue
+        # end of ugly hack.
         if test_type in ['dynamic', 'Object']:
           checks.append('?%s' % parameter_name)
         elif not can_omit_type_check(test_type, i):