[dart:io] Namespaces for file IO

runtime/bin/file_system_entity_patch.dart

Index: runtime/bin/file_system_entity_patch.dart
diff --git a/runtime/bin/file_system_entity_patch.dart b/runtime/bin/file_system_entity_patch.dart
index f173adde79516283e04b9f04f7e7086e2f9c3fea..9b90a64783c10cb3f1a15aafa376d81edd578a22 100644
--- a/runtime/bin/file_system_entity_patch.dart
+++ b/runtime/bin/file_system_entity_patch.dart
@@ -5,15 +5,18 @@
 @patch
 class FileStat {
   @patch
-  static _statSync(String path) native "File_Stat";
+  static _statSync(_Namespace namespace, String path) native "File_Stat";
 }
 
 @patch
 class FileSystemEntity {
   @patch
-  static _getType(String path, bool followLinks) native "File_GetType";
+  static _getType(_Namespace namespace, String path, bool followLinks)
+      native "File_GetType";
   @patch
-  static _identical(String path1, String path2) native "File_AreIdentical";
+  static _identical(_Namespace namespace, String path1, String path2)
+      native "File_AreIdentical";
   @patch
-  static _resolveSymbolicLinks(String path) native "File_ResolveSymbolicLinks";
+  static _resolveSymbolicLinks(_Namespace namespace, String path)
+      native "File_ResolveSymbolicLinks";
 }