New small/large screen division for Launcher.

Previously the dp division between the two was set at 600dp
(7" tablets). This has now been bumped up to 720dp
(10" tablets).

Change-Id: I1f0419e504fc3bb606156c1cf6fbe03956274184
diff --git a/src/com/android/launcher2/LauncherModel.java b/src/com/android/launcher2/LauncherModel.java
index 7da55db..159ddb0 100644
--- a/src/com/android/launcher2/LauncherModel.java
+++ b/src/com/android/launcher2/LauncherModel.java
@@ -138,6 +138,7 @@
         public void bindAppsRemoved(ArrayList<ApplicationInfo> apps, boolean permanent);
         public void bindPackagesUpdated();
         public boolean isAllAppsVisible();
+        public boolean isAllAppsButtonRank(int rank);
         public void bindSearchablesChanged();
     }
 
@@ -920,7 +921,7 @@
             int containerIndex = item.screen;
             if (item.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
                 // Return early if we detect that an item is under the hotseat button
-                if (Hotseat.isAllAppsButtonRank(item.screen)) {
+                if (mCallbacks == null || mCallbacks.get().isAllAppsButtonRank(item.screen)) {
                     return false;
                 }