Change core lib, dart2js, and more for new optional parameters syntax

tools/testing/dart/test_suite.dart

Index: tools/testing/dart/test_suite.dart
===================================================================
--- tools/testing/dart/test_suite.dart	(revision 13683)
+++ tools/testing/dart/test_suite.dart	(working copy)
@@ -224,8 +224,8 @@
                     this.suiteName,
                     Path suiteDirectory,
                     this.statusFilePaths,
-                    [this.isTestFilePredicate,
-                    bool recursive = false])
+                    {this.isTestFilePredicate,
+                    bool recursive: false})
   : dartDir = TestUtils.dartDir(), _listRecursive = recursive,
     suiteDir = TestUtils.dartDir().join(suiteDirectory);
 
@@ -263,7 +263,7 @@
     return new StandardTestSuite(configuration,
         name, directory,
         ['$directory/$name.status', '$directory/${name}_dart2js.status'],
-        (filename) => filename.endsWith('_test.dart'),
+        isTestFilePredicate: (filename) => filename.endsWith('_test.dart'),
         recursive: true);
   }