Fix the watcher tests on Windows.

The tests were assuming POSIX paths.

R=rnystrom@google.com
BUG=

Review URL: https://codereview.chromium.org//66073002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/watcher@30091 260f80e4-7a28-3924-810f-c04153c831b5

pkgs/watcher/test/utils.dart

diff --git a/pkgs/watcher/test/utils.dart b/pkgs/watcher/test/utils.dart
index d1b9f94..3070d79 100644
--- a/pkgs/watcher/test/utils.dart
+++ b/pkgs/watcher/test/utils.dart
@@ -176,7 +176,7 @@
 void expectEvent(ChangeType type, String path) {
   var matcher = predicate((e) {
     return e is WatchEvent && e.type == type &&
-        e.path == p.join(_sandboxDir, path);
+        e.path == p.join(_sandboxDir, p.normalize(path));
   }, "is $type $path");
 
   if (_unorderedEventFuture != null) {