QS icon sizes should be 24dp.

Not 28dp.

Bug: 21118976
Change-Id: I9cc326d1333d85b783b85e3238a2a506bf3b55c0
diff --git a/packages/SystemUI/res/values/dimens.xml b/packages/SystemUI/res/values/dimens.xml
index a6313ad..37601884 100644
--- a/packages/SystemUI/res/values/dimens.xml
+++ b/packages/SystemUI/res/values/dimens.xml
@@ -164,7 +164,7 @@
     <dimen name="pull_span_min">25dp</dimen>
 
     <dimen name="qs_tile_height">88dp</dimen>
-    <dimen name="qs_tile_icon_size">28dp</dimen>
+    <dimen name="qs_tile_icon_size">24dp</dimen>
     <dimen name="qs_tile_text_size">12sp</dimen>
     <dimen name="qs_tile_divider_height">1dp</dimen>
     <dimen name="qs_panel_padding">16dp</dimen>