A number of fast/css tests fail.
These tests fail with 8u102, 8u112 and 9.

Affected tests:
fast/css/css-fontface-rule-crash.html
fast/css/css-selector-text.html
fast/css/css-set-selector-text.html
fast/css/currentColor-value-style-update.html
fast/css/direct-adjacent-style-update-optimization.html
fast/css/focus-ring-exists-for-search-field.html
fast/css/font-calculated-value.html
fast/css/font-shorthand-from-longhands.html
fast/css/font-shorthand-line-height.html
fast/css/font-systemFontID-parsing.html
fast/css/fontloader-download-error.html
fast/css/fontloader-events.html
fast/css/fontloader-loadingdone.html
fast/css/fontloader-multiple-faces-download-error.html
fast/css/fontloader-multiple-faces.html
fast/css/fontloader-multiple-families.html
fast/css/fontloader-page-cache.html
fast/css/getComputedStyle/computed-style-font.html
fast/css/getComputedStyle/computed-style-without-renderer.html
fast/css/getComputedStyle/computed-style.html
fast/css/line-height-text-autosizing.html
fast/css/named-images.html
fast/css/parse-justify-items.html
fast/css/parsing-css-attribute-case-insensitive-value-1.html
fast/css/parsing-css-attribute-case-insensitive-value-4.html
fast/css/parsing-css-descendant-combinator-doubled-child-syntax.html
fast/css/pseudo-invalid-form-invalidation-optimization.html
fast/css/pseudo-valid-form-invalidation-optimization.html
fast/css/viewport-units-dynamic.html

Note that some of these tests were not present in pre-Webkit merge DRT workspace, and many of these pass in old DRT workspace with 8u102, or both 8u102 and 9.