Misc. cleanup

ui/webui/resources/css/tree.css

Index: ui/webui/resources/css/tree.css
diff --git a/ui/webui/resources/css/tree.css b/ui/webui/resources/css/tree.css
index 103f1aaae2d0672d578eeab2c1b01e64c38ae638..2681f5e70f99f65564cf422d361a4679c7a1b0cb 100644
--- a/ui/webui/resources/css/tree.css
+++ b/ui/webui/resources/css/tree.css
@@ -106,6 +106,20 @@ html[dir=rtl] .tree-label {
   background-position: 100% 50%;
 }
 
+.tree-label,
+.tree-row[may-have-children] > .tree-label {
+  background-image: -webkit-image-set(
+      url(../../../resources/default_100_percent/common/folder_closed.png) 1x,
+      url(../../../resources/default_200_percent/common/folder_closed.png) 2x);
+}
+
+.tree-item[expanded] > .tree-row > .tree-label {
+  background-image: -webkit-image-set(
+      url(../../../views/resources/default_100_percent/common/folder_open.png) 1x,
+      url(../../../views/resources/default_200_percent/common/folder_open.png) 2x);
+}
+
+<if expr="not is_macosx and not is_ios">
 html[dir=rtl] .tree-label,
 html[dir=rtl] .tree-row[may-have-children] > .tree-label {
   background-image: -webkit-image-set(
@@ -118,6 +132,7 @@ html[dir=rtl] .tree-item[expanded] > .tree-row > .tree-label {
      url(../../../views/resources/default_100_percent/common/folder_open_rtl.png) 1x,
      url(../../../views/resources/default_200_percent/common/folder_open_rtl.png) 2x);
 }
+</if>
 
 tree[icon-visibility=hidden] .tree-label {
   -webkit-padding-start: 0;
@@ -129,19 +144,6 @@ tree[icon-visibility=parent] .tree-row[has-children=false] > .tree-label {
   background-image: none;
 }
 
-.tree-label,
-.tree-row[may-have-children] > .tree-label {
-  background-image: -webkit-image-set(
-      url(../../../resources/default_100_percent/common/folder_closed.png) 1x,
-      url(../../../resources/default_200_percent/common/folder_closed.png) 2x);
-}
-
-.tree-item[expanded] > .tree-row > .tree-label {
-  background-image: -webkit-image-set(
-      url(../../../views/resources/default_100_percent/common/folder_open.png) 1x,
-      url(../../../views/resources/default_200_percent/common/folder_open.png) 2x);
-}
-
 /* We need to ensure that even empty labels take up space */

[Dan Beam, 2016/09/02 23:17:24]

also necessary?

[Peter Kasting, 2016/09/02 23:22:22]

Don't know.  I haven't really started hacking on this file in earnest yet.  If I
do and find this can go away, I can remove it later.

 .tree-label:empty::after {
   content: ' ';