Revert "Disabled the wallpaper when completely in -1 Now space."

This reverts commit f3a8e8c0bd8b0dbe3991e5ad9d315e6e253e92eb.

Bug: 12978354
Change-Id: I11f1eeaab4fad9a2e4acf835144f0b0dc6fac54b
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index c87f9e2..1060a94 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -2887,7 +2887,7 @@
                 mWorkspaceBackgroundDrawable : null);
     }
 
-    protected void changeWallpaperVisiblity(boolean visible) {
+    void updateWallpaperVisibility(boolean visible) {
         int wpflags = visible ? WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER : 0;
         int curflags = getWindow().getAttributes().flags
                 & WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;