Fix some analyzer warnings in dart:io.

BUG=
R=sgjesse@google.com

Review URL: https://codereview.chromium.org//22893005

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@26051 260f80e4-7a28-3924-810f-c04153c831b5

sdk/lib/io/directory_impl.dart

@@ -98,7 +98,7 @@ class _Directory implements Directory {
   }
 
   Future<Directory> createRecursively() {
-    var path = new Path(path);
+    var path = new Path(this.path);
     var dirsToCreate = [];
     var terminator = path.isAbsolute ? '/' : '';
     while (path.toString() != terminator) {
@@ -139,7 +139,7 @@ class _Directory implements Directory {
   }
 
   void createRecursivelySync() {
-    var path = new Path(path);
+    var path = new Path(this.path);
     var dirsToCreate = [];
     var terminator = path.isAbsolute ? '/' : '';
     while (path.toString() != terminator) {

sdk/lib/io/file_impl.dart

@@ -346,7 +346,7 @@ class _File implements File {
   }
 
   Directory get directory {
-    Path path = new Path(path).directoryPath;
+    Path path = new Path(this.path).directoryPath;
     return new Directory.fromPath(path);
   }
 

sdk/lib/io/http.dart

@@ -1489,4 +1489,6 @@ class RedirectException implements HttpException {
                           List<RedirectInfo> this.redirects);
 
   String toString() => "RedirectException: $message";
+
+  Uri get uri => redirects.last.location;
 }

sdk/lib/io/websocket_impl.dart

@@ -826,7 +826,7 @@ class _WebSocketImpl extends Stream implements WebSocket {
                                      cancelOnError: cancelOnError);
   }
 
-  Duration get pingnterval => _pingInterval;
+  Duration get pingInterval => _pingInterval;
 
   void set pingInterval(Duration interval) {
     if (_writeClosed) return;