dart:io | Remove deprecated _Path library, and use FileSystemEntity.parent for recursive Directory.…

sdk/lib/io/directory_impl.dart

Index: sdk/lib/io/directory_impl.dart
diff --git a/sdk/lib/io/directory_impl.dart b/sdk/lib/io/directory_impl.dart
index 288364868df2b194827bd594a157b9ecb1755f04..e269610d04d0b02497190ef394529d28e098063f 100644
--- a/sdk/lib/io/directory_impl.dart
+++ b/sdk/lib/io/directory_impl.dart
@@ -91,12 +91,11 @@ class _Directory extends FileSystemEntity implements Directory {
   }
 
   Future<Directory> createRecursively() {
-    var path = new _Path(this.path);
     var dirsToCreate = [];
-    var terminator = path.isAbsolute ? '/' : '';
-    while (path.toString() != terminator) {
-      dirsToCreate.add(new Directory(path.toNativePath()));
-      path = path.directoryPath;
+    var dir = this;
+    while (dir.path != dir.parent.path) {
+      dirsToCreate.add(dir);
+      dir = dir.parent;
     }
     return _computeExistingIndex(dirsToCreate).then((index) {
       var future;
@@ -128,14 +127,12 @@ class _Directory extends FileSystemEntity implements Directory {
   }
 
   void createRecursivelySync() {
-    var path = new _Path(this.path);
+    var dir = this;
     var dirsToCreate = [];
-    var terminator = path.isAbsolute ? '/' : '';
-    while (path.toString() != terminator) {
-      var dir = new Directory(path.toNativePath());
+    while (dir.path != dir.parent.path) {
       if (dir.existsSync()) break;
       dirsToCreate.add(dir);
-      path = path.directoryPath;
+      dir = dir.parent;
     }
     for (var i = dirsToCreate.length - 1; i >= 0; i--) {
       dirsToCreate[i].createSync();