Add Autofill preview support for <select> input fields

Source/core/css/html.css

Index: Source/core/css/html.css
diff --git a/Source/core/css/html.css b/Source/core/css/html.css
index bea688b51836764cf28bddf740e33f23fdd6c3b8..2e905889bd7268dfb2ba13c3ef2f22dbacde39c1 100644
--- a/Source/core/css/html.css
+++ b/Source/core/css/html.css
@@ -686,7 +686,7 @@ input[type="file"] {
     text-align: start !important;
 }
 
-input:-webkit-autofill, textarea:-webkit-autofill {
+input:-webkit-autofill, textarea:-webkit-autofill, select:-webkit-autofill {
     background-color: #FAFFBD !important;
     background-image:none !important;
     color: #000000 !important;