MD Settings: Add style for disabled <select>.

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 708d5aabd0984e31d191bacb31bc89a7b8e64060..2d6de26ad9151a31df59d1d9287bab64ffd78e48 100644
--- a/chrome/browser/resources/settings/md_select_css.html
+++ b/chrome/browser/resources/settings/md_select_css.html
@@ -26,6 +26,13 @@
         width: 200px;
       }
 
+      .md-select[disabled] {

[dschuyler, 2016/10/10 23:56:26]

Please make a comment about where these values
came from (so I don't wrongly change them
to something else :) ).

[dpapad, 2016/10/11 00:05:11]

Done.

+        border-bottom: 1px dashed #737373;

[dschuyler, 2016/10/10 23:56:26]

Maybe the 737373 could be replace with a var()
maybe --secondary-text-color.

[dpapad, 2016/10/11 00:05:11]

Done, thanks for the suggestion, I was suspecting that there must be a var where
#737373 comes from.

+        color: #737373;
+        opacity: 0.33;
+        pointer-events: none;
+      }
+
       :host-context([dir=rtl]) .md-select {
         background-position-x: 3%;
       }