Validator rollup

[twifkak]

• cl/306685743 Revision bump for Revert #27159 and #27521 #27768
• cl/306343181 Fix javascript validator symbol export.
• cl/306335254 Revision bump for Ship remote page attachments #27709
• cl/305733898 CSS validation changes.
• cl/305561778 Revision bump for 🐛Require src attribute in amp-ad-custom #27624

[amp-owners-bot]

Hey @ampproject/wg-caching, these files were changed:

validator/engine/validator.js
validator/engine/validator_test.js
validator/testdata/actions_feature_tests/css_length.html
validator/testdata/actions_feature_tests/css_length.out
validator/testdata/amp4email_feature_tests/css_length.html
validator/testdata/amp4email_feature_tests/css_length.out
validator/testdata/feature_tests/css_length.html
validator/testdata/feature_tests/css_length.out
validator/testdata/feature_tests/incorrect_custom_style.html
validator/testdata/feature_tests/incorrect_custom_style.out
validator/testdata/feature_tests/inline_style.html
validator/testdata/feature_tests/inline_style.out
validator/testdata/transformed_feature_tests/css_length.html
validator/testdata/transformed_feature_tests/css_length.out
validator/validator-css.protoascii
validator/validator-main.protoascii
validator/validator.pb.go
validator/validator.proto

[twifkak]

https://travis-ci.org/github/ampproject/amphtml/jobs/675444272 Java tests timed out. Closed and re-opened PR to trigger a Travis re-run. 🤞

[honeybadgerdontcare]

@GeorgeLuo can we remove validator-java tests from blocking?

[twifkak]

@banaag Travis passes now; please review.