Cleanup in downloads tests

chrome/test/pyautolib/pyauto_utils.py

Index: chrome/test/pyautolib/pyauto_utils.py
diff --git a/chrome/test/pyautolib/pyauto_utils.py b/chrome/test/pyautolib/pyauto_utils.py
index 4d3a3d1f5f14d31a51fb21639a85982ee6579b3f..bd0945ce1523c871d2e96d5c9e3a702daa2b26c9 100644
--- a/chrome/test/pyautolib/pyauto_utils.py
+++ b/chrome/test/pyautolib/pyauto_utils.py
@@ -77,3 +77,12 @@ class ExistingPathReplacer(object):
   def _RemoveBackupDir(self):
     if self._backup_dir and os.path.isdir(self._backup_dir):
       shutil.rmtree(self._backup_dir, ignore_errors=True)
+
+
+def RemovePath(path):
+  """Remove the given path (file or dir)."""
+  if os.path.isdir(path):
+    shutil.rmtree(path, ignore_errors=True)
+    return
+  os.remove(path)
+