Change core lib, dart2js, and more for new optional parameters syntax and semantics (new semantics is not enforced yet).
Review URL: https://codereview.chromium.org//11090016

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@13684 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/lib/src/git.dart b/lib/src/git.dart
index 31e8b27..12c6a02 100644
--- a/lib/src/git.dart
+++ b/lib/src/git.dart
@@ -25,7 +25,7 @@
 /// list of strings if it succeeded. Completes to an exception if it failed.
 Future<List<String>> run(List<String> args, [String workingDir]) {
   return _gitCommand.chain((git) {
-    return runProcess(git, args, workingDir);
+    return runProcess(git, args, workingDir: workingDir);
   }).transform((result) {
     if (!result.success) throw new Exception(
         'Git error. Command: git ${Strings.join(args, " ")}\n'