Fix for the missing new keyword on an external factory call and updated expected test failures/e…

pkg/dev_compiler/test/codegen/lib/html/js_typed_interop_test.dart

Index: pkg/dev_compiler/test/codegen/lib/html/js_typed_interop_test.dart
diff --git a/pkg/dev_compiler/test/codegen/lib/html/js_typed_interop_test.dart b/pkg/dev_compiler/test/codegen/lib/html/js_typed_interop_test.dart
index 431d533037e10d83a3493fd049c0da557b007927..f0b993867712f004cf898de2c7ca4b2622c147d5 100644
--- a/pkg/dev_compiler/test/codegen/lib/html/js_typed_interop_test.dart
+++ b/pkg/dev_compiler/test/codegen/lib/html/js_typed_interop_test.dart
@@ -71,7 +71,7 @@ _injectJs() {
     getA: function() { return this.a;}
   };
 
-  var selection = ["a", "b", "c", foo, bar];  
+  var selection = ["a", "b", "c", foo, bar];
 
   function returnNumArgs() { return arguments.length; };
   function returnLastArg() { return arguments[arguments.length-1]; };
@@ -110,6 +110,14 @@ class ClassWithConstructor {
   external get b;
 }
 
+@JS('ClassWithConstructor')
+class ClassWithFactory {
+  external factory ClassWithFactory(aParam, bParam);
+  external getA();
+  external get a;
+  external get b;
+}
+
 typedef num MultiplyWithDefault(num a, [num b]);
 
 @JS()
@@ -223,6 +231,13 @@ main() {
       expect(o.b, equals("bar"));
       expect(o.getA(), equals("foo"));
     });
+
+    test('external factory', () {
+      var o = new ClassWithFactory("foo", "bar");
+      expect(o.a, equals("foo"));
+      expect(o.b, equals("bar"));
+      expect(o.getA(), equals("foo"));
+    });
   });
 
   group('property', () {