Consistently re-enabling the wallpaper when we leave launcher. (Bug 6445085)

Change-Id: I8357677479a693a808097a797b9af6906f4d7801
diff --git a/src/com/android/launcher2/Launcher.java b/src/com/android/launcher2/Launcher.java
index 8b6fee9..984cf31 100644
--- a/src/com/android/launcher2/Launcher.java
+++ b/src/com/android/launcher2/Launcher.java
@@ -665,6 +665,11 @@
 
     @Override
     protected void onPause() {
+        // NOTE: We want all transitions from launcher to act as if the wallpaper were enabled
+        // to be consistent.  So re-enable the flag here, and we will re-disable it as necessary
+        // when Launcher resumes and we are still in AllApps.
+        updateWallpaperVisibility(true);
+
         super.onPause();
         mPaused = true;
         mDragController.cancelDrag();