Merging Motorola's patch to disable apps when is safe mode.

issue: 16044192

Change-Id: I10069dcdf459ecc71361271e883eabb743d77822
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index b01db71..a8bace8 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -2047,6 +2047,8 @@
                                     info.spanX = 1;
                                     info.spanY = 1;
                                     info.intent.putExtra(ItemInfo.EXTRA_PROFILE, serialNumber);
+                                    info.isDisabled = isSafeMode
+                                            && !Utilities.isSystemApp(context, intent);
 
                                     // check & update map of what's occupied
                                     deleteOnInvalidPlacement.set(false);