Index: third_party/WebKit/Tools/Scripts/webkitpy/w3c/update_w3c_test_expectations.py |
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/w3c/update_w3c_test_expectations.py b/third_party/WebKit/Tools/Scripts/webkitpy/w3c/update_w3c_test_expectations.py |
index f999e44ff83ae1a385c8e36e711b86366c3f6f02..a578105edd64dee19a2663c345d67b4e82249fd0 100644 |
--- a/third_party/WebKit/Tools/Scripts/webkitpy/w3c/update_w3c_test_expectations.py |
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/w3c/update_w3c_test_expectations.py |
@@ -271,6 +271,8 @@ class W3CExpectationsLineAdder(object): |
file_contents = self.host.filesystem.read_text_file(expectations_file_path) |
marker_comment_index = file_contents.find(marker_comment) |
line_list = [line for line in line_list if self._test_name_from_expectation_string(line) not in file_contents] |
+ if not line_list: |
+ return |
if marker_comment_index == -1: |
file_contents += '\n%s\n' % marker_comment |
file_contents += '\n'.join(line_list) |