MD Settings: Style native <select> down arrow.

chrome/browser/resources/settings/md_select_css.html

Index: chrome/browser/resources/settings/md_select_css.html
diff --git a/chrome/browser/resources/settings/md_select_css.html b/chrome/browser/resources/settings/md_select_css.html
index c04cf40bcd6faf998a169030d53c3efc9db4f665..5ab9fda3cbe6f484870717b1ce52126406835dc3 100644
--- a/chrome/browser/resources/settings/md_select_css.html
+++ b/chrome/browser/resources/settings/md_select_css.html
@@ -4,7 +4,7 @@
   <template>
     <style>
       select {
-        background-color: transparent;
+        -webkit-appearance: none;
         border-bottom: 1px solid var(--paper-grey-300);
         border-left: none;
         border-right: none;
@@ -18,6 +18,16 @@
         width: 200px;
       }
 
+      :host-context([dir=ltr]) select {
+        background: url(images/arrow_down.svg) 97% 70% no-repeat;
+        background-size: 0.9em;
+      }
+
+      :host-context([dir=rtl]) select {
+        background: url(images/arrow_down.svg) 3% 70% no-repeat;
+        background-size: 0.9em;

[Dan Beam, 2016/10/04 22:12:33]

can this be

select {
  background: url(images/arrow_down.svg) 97% 70% no-repeat;
  background-size: 0.9em;
}

:host-context([dir=rtl]) select {
  background-position-x: 97%;
}

?

[dpapad, 2016/10/04 22:26:34]

Done.

+      }
+
       .select-underline {
         border-top: 2px solid var(--paper-indigo-500);
         display: block;