Update web-platform-tests to revision 0d318188757a9c996e20b82db201fd04de5aa255

tests/wpt/web-platform-tests/tools/manifest/vcs.py

@@ -0,0 +1,21 @@
+import os
+import subprocess
+
+def get_git_func(repo_path):
+    def git(cmd, *args):
+        full_cmd = ["git", cmd] + list(args)
+        return subprocess.check_output(full_cmd, cwd=repo_path, stderr=subprocess.STDOUT)
+    return git
+
+
+def is_git_repo(tests_root):
+    return os.path.exists(os.path.join(tests_root, ".git"))
+
+
+_repo_root = None
+def get_repo_root():
+    global _repo_root
+    if _repo_root is None:
+        git = get_git_func(os.path.dirname(__file__))
+        _repo_root = git("rev-parse", "--show-toplevel").rstrip()
+    return _repo_root