Backed out 2 changesets (bug 1755033) for causing mochitest failures …

…in test_formautofill_preview_highlight.html CLOSED TREE

Backed out changeset 4fde36e8266a (bug 1755033)
Backed out changeset 5e26aac6ca16 (bug 1755033)

layout/reftests/forms/input/text/reftest.list

@@ -15,10 +15,9 @@ fuzzy(0-1,0-500) needs-focus == select.html select-ref.html
 == autofill-blank.html autofill-preview-blank.html
 != autofill.html autofill-blank.html
 != autofill-preview.html autofill-preview-blank.html
-== autofill.html autofill-preview.html
+!= autofill.html autofill-preview.html
 == autofill-prefilled-value.html autofill-preview.html
 == autofill-preview-line-height.html autofill-line-height.html
-== autofill-author-background.html autofill.html
 
 == pseudo-class-lock.html pseudo-class-lock-ref.html
 

layout/style/res/forms.css

@@ -915,7 +915,11 @@ input:is([type=date], [type=time], [type=datetime-local]):is(:disabled, :read-on
 }
 
 input:autofill, select:autofill {
-  background-color: -moz-autofill-background !important;
-  background-image: none !important;
-  color: FieldText !important;
+  /* The idea behind using background-image instead of plain background-color
+   * is that it's less likely to be overridden by the page. */
+  background-image: linear-gradient(-moz-autofill-background, -moz-autofill-background);
+}
+
+input:-moz-autofill-preview, select:-moz-autofill-preview {
+  color: GrayText;
 }