Update FolderIcon preview to be 1dp bigger (stroke) than other
shortcuts.

Bug: 38338424
Change-Id: I2e9cdb2285e97e9d899eda13947bedb40d6fbcb2
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 958cb6b..110e790 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -119,7 +119,7 @@
 
 <!-- Folders -->
     <!-- The size of the padding on the preview background drawable -->
-    <dimen name="folder_preview_padding">6dp</dimen>
+    <dimen name="folder_preview_padding">10dp</dimen>
     <dimen name="page_indicator_dot_size">8dp</dimen>
 
     <dimen name="folder_cell_x_padding">9dp</dimen>