Add feature flag for all apps pull up work.

b/28917826

Change-Id: I98b647694b1041ef4061dcd6297b63f11fddc7ea
diff --git a/src_config/com/android/launcher3/config/FeatureFlags.java b/src_config/com/android/launcher3/config/FeatureFlags.java
index 34c6663..2b9e6ce 100644
--- a/src_config/com/android/launcher3/config/FeatureFlags.java
+++ b/src_config/com/android/launcher3/config/FeatureFlags.java
@@ -29,4 +29,5 @@
     public static boolean LAUNCHER3_LEGACY_FOLDER_ICON = false;
     public static boolean LAUNCHER3_USE_SYSTEM_DRAG_DRIVER = false;
     public static boolean LAUNCHER3_DISABLE_PINCH_TO_OVERVIEW = false;
+    public static boolean LAUNCHER3_ALL_APPS_PULL_UP = true;
 }