Modifying AppsCustomize behaviour to use springloaded mode.

Change-Id: I21d181ad3d245731ee8402915f8918b91bfc4553
diff --git a/res/layout/apps_customize_pane.xml b/res/layout/apps_customize_pane.xml
index 604dff4..f3ecb48 100644
--- a/res/layout/apps_customize_pane.xml
+++ b/res/layout/apps_customize_pane.xml
@@ -16,11 +16,14 @@
 <com.android.launcher2.AppsCustomizeTabHost
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:launcher="http://schemas.android.com/apk/res/com.android.launcher">
+    <com.android.launcher2.AllAppsBackground
+        android:id="@+id/all_apps_background"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
     <LinearLayout
         android:orientation="vertical"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:background="#FF000000">
+        android:layout_height="match_parent">
         <!-- The layout_width of the tab bar gets overriden to align the content
              with the text in the tabs in AppsCustomizeTabHost. -->
         <FrameLayout