Supporting custom widgets provided by launcher

-> This change provides integration for widgets provided by
   the launcher package which can run arbitrary code.

Change-Id: I6052da5c4afed7ee72e3b44d045b9c46f2d84c42
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index f12cb57..54689ec 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -28,6 +28,8 @@
     <dimen name="dynamic_grid_overview_bar_item_width">80dp</dimen>
     <dimen name="dynamic_grid_overview_bar_spacer_width">20dp</dimen>
 
+    <dimen name="default_widget_padding">8dp</dimen>
+
 <!-- Cling -->
     <dimen name="cling_migration_logo_height">240dp</dimen>
     <dimen name="cling_migration_logo_width">165dp</dimen>