[Partial reland] Fix extract_expectation_names.py for recent refactor

Previously reviewed on:
https://chromium-review.googlesource.com/c/chromium/src/+/2050036

Change-Id: I4dac360647610047b04024ef8cb6c2a12d8f164e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2097297Reviewed-by: Robert Ma <robertma@chromium.org>
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#748938}

third_party/blink/tools/extract_expectation_names.py

@@ -7,7 +7,11 @@
 # Given an expectations file (e.g. web_tests/WebGPUExpectations), extracts only
 # the test name from each expectation (e.g. wpt_internal/webgpu/cts.html?...).
 
-from blinkpy.web_tests.models.test_expectations import TestExpectationLine
+from blinkpy.common import path_finder
+
+path_finder.add_typ_dir_to_sys_path()
+
+from typ.expectations_parser import TaggedTestListParser
 import sys
 
 
@@ -19,9 +23,7 @@ class StubPort(object):
 filename = sys.argv[1]
 with open(filename) as f:
     port = StubPort()
-    line_number = 1
-    for line in f:
-        test_expectation = TestExpectationLine.tokenize_line(filename, line, line_number, port)
-        if test_expectation.name:
-            print test_expectation.name
-        line_number += 1
+    parser = TaggedTestListParser(f.read())
+    for test_expectation in parser.expectations:
+        if test_expectation.test:
+            print test_expectation.test