Ignore dotfiles when copying test data.

build/copy_test_data_ios.py

Index: build/copy_test_data_ios.py
diff --git a/build/copy_test_data_ios.py b/build/copy_test_data_ios.py
index e6c6a386084624085125ff0a5aad5600dcb2b1b9..51307358355ecdbf078e5e15d624829ea40ed8cf 100755
--- a/build/copy_test_data_ios.py
+++ b/build/copy_test_data_ios.py
@@ -16,6 +16,12 @@ class WrongNumberOfArgumentsException(Exception):
 def ListFilesForPath(path):
   """Returns a list of all the files under a given path."""
   output = []
+  # Ignore dotfiles and dot directories.
+  # TODO(rohitrao): This will fail to exclude cases where the initial argument
+  # is a relative path that starts with a dot.
+  if os.path.basename(path).startswith('.'):
+    return output
+
   # Files get returned without modification.
   if not os.path.isdir(path):
     output.append(path)