MD Settings: Fix styles in several places.

chrome/browser/resources/settings/settings_shared_css.html

Index: chrome/browser/resources/settings/settings_shared_css.html
diff --git a/chrome/browser/resources/settings/settings_shared_css.html b/chrome/browser/resources/settings/settings_shared_css.html
index 32ed821c396e628d90e45517f9752ab0708e4dbd..0a7890ff2e7fa2434285286dffa450345a9c2de8 100644
--- a/chrome/browser/resources/settings/settings_shared_css.html
+++ b/chrome/browser/resources/settings/settings_shared_css.html
@@ -338,7 +338,7 @@
       }
 
       /* Helper for a list frame to automatically avoid the separator line. */
-      .vertical-list > *:not(:first-of-type) {
+      .vertical-list > .list-item:not(:first-child) {

[dschuyler, 2017/02/01 23:06:23]

I searched around to see if we use .list-item in all the places we use
.vertical-list. It looks like this file needs to be updated:
chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html
to use .list-item (I didn't see it used) so that this change doesn't break that
page.

[scottchen, 2017/02/02 01:17:14]

I don't actually need to change this, just thought it would be more explicit. I
did a search too, but missed bluetooth_subpage. 
Reverting.

         border-top: var(--settings-separator-line);
       }