Use explicit case-insensitive attribute-value matching in UA-stylesheets

Source/core/css/themeChromiumAndroid.css

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 23 matching lines @@
 select[multiple],
 select[size][multiple] {
     -webkit-appearance: menulist;
     align-items: center;
     background-color: ButtonFace;
     border: 1px solid #a9a9a9;
     border-radius: initial;
     white-space: pre;
 }
 
-input[type="date"]:disabled,
-input[type="datetime-local"]:disabled,
-input[type="month"]:disabled,
-input[type="time"]:disabled,
-input[type="week"]:disabled,
-input[type="date"]:read-only,
-input[type="datetime-local"]:read-only,
-input[type="month"]:read-only,
-input[type="time"]:read-only,
-input[type="week"]:read-only {
+input[type="date" i]:disabled,
+input[type="datetime-local" i]:disabled,
+input[type="month" i]:disabled,
+input[type="time" i]:disabled,
+input[type="week" i]:disabled,
+input[type="date" i]:read-only,
+input[type="datetime-local" i]:read-only,
+input[type="month" i]:read-only,
+input[type="time" i]:read-only,
+input[type="week" i]:read-only {
     background-color: ButtonFace;
     color: GrayText;
 }
 
-input[type="date"],
-input[type="datetime-local"],
-input[type="month"],
-input[type="time"],
-input[type="week"] {
+input[type="date" i],
+input[type="datetime-local" i],
+input[type="month" i],
+input[type="time" i],
+input[type="week" i] {
     align-items: center;
     -webkit-appearance: menulist;
     background-color: ButtonFace;
     border: 1px solid #a9a9a9;
     display: -webkit-inline-flex;
     overflow: hidden;
     width: 10em;
 }
 
 input::-webkit-date-and-time-value {
     margin: 1px 24px 1px 4px;
     white-space: pre;
 }