#121306 was reverted because the web HTML renderer is reporting rounded text height / alphabetic baseline metrics.

failures:
https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket/8787337181803429201/+/u/run_test.dart_for_web_tests_shard_and_subshard_7_last/test_stdout
https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket/8787337181024748465/+/u/run_test.dart_for_web_tests_shard_and_subshard_3/test_stdout
https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket/8787337181024748497/+/u/run_test.dart_for_web_tests_shard_and_subshard_1/test_stdout

When fontSize = 14 and textScaleFactor = 1.0, with the "FlutterTest" font the text height should be exactly 14.0, and the baseline location should be 14 / 1024 * 768 = 10.5. But the HTML renderer is reporting a text height of 15.0 and a baseline offset of 11.0.

For now I'm going to change the font size used in the failing tests to multiples of 4 to avoid the rounding.