Refactor zooming animation, and apply it to customize drawer too.

Change-Id: I0bbd5a68adc82cea02dc583ac3d04e3de8c0346e
diff --git a/res/layout-xlarge/all_apps_tabbed.xml b/res/layout-xlarge/all_apps_tabbed.xml
index c772706..0842fd0 100644
--- a/res/layout-xlarge/all_apps_tabbed.xml
+++ b/res/layout-xlarge/all_apps_tabbed.xml
@@ -44,7 +44,7 @@
                     android:layout_width="match_parent"
                     android:layout_height="match_parent"
                     android:layout_alignParentBottom="true"
-                    android:layout_marginBottom="@dimen/button_bar_height"
+                    android:layout_marginBottom="8dip"
                     android:layout_marginTop="8dip"
                     android:nextFocusDown="@+id/all_apps_2d_home"
                     android:nextFocusUp="@null"
diff --git a/res/layout-xlarge/launcher.xml b/res/layout-xlarge/launcher.xml
index fa9c881..395b048 100644
--- a/res/layout-xlarge/launcher.xml
+++ b/res/layout-xlarge/launcher.xml
@@ -26,7 +26,7 @@
         layout="@layout/all_apps_tabbed"
         android:id="@+id/all_apps_view"
         android:layout_width="match_parent"
-        android:layout_height="550dip"
+        android:layout_height="500dip"
         android:layout_gravity="top"/>
 
     <!-- The workspace contains 5 screens of cells -->
@@ -96,8 +96,7 @@
         android:id="@android:id/tabhost"
         android:layout_width="match_parent"
         android:layout_height="500dip"
-        android:layout_gravity="bottom"
-        android:visibility="gone">
+        android:layout_gravity="bottom">
         <LinearLayout
             android:orientation="vertical"
             android:layout_width="match_parent"