dart:io | Fix a few bugs in the Android port of dart:io.

runtime/bin/directory_android.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 #if defined(TARGET_OS_ANDROID)
 
 #include "bin/directory.h"
 
 #include <dirent.h>  // NOLINT
@@ skipping 460 matching lines @@
     // suitable for bring-up work and tests, is to create a tmp
     // directory in /data/local/tmp.
     //
     // TODO(4413): In the long run, when running in an application we should
     // probably use android.content.Context.getCacheDir().
     #define ANDROID_TEMP_DIR "/data/local/tmp"
     struct stat st;
     if (stat(ANDROID_TEMP_DIR, &st) != 0) {
       mkdir(ANDROID_TEMP_DIR, 0777);
     }
-    path.Add(ANDROID_TEMP_DIR "/tmp/temp_dir1_");
+    path.Add(ANDROID_TEMP_DIR "/temp_dir1_");
   } else if ((path.data)[path.length - 1] == '/') {
     path.Add("temp_dir_");
   }
   if (!path.Add("XXXXXX")) {
     // Pattern has overflowed.
     return NULL;
   }
   char* result;
   do {
     result = MakeTempDirectory(path.data);
@@ skipping 29 matching lines @@
 bool Directory::Rename(const char* path, const char* new_path) {
   ExistsResult exists = Exists(path);
   if (exists != EXISTS) return false;
   return (TEMP_FAILURE_RETRY(rename(path, new_path)) == 0);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_ANDROID)