Merge cherrypicks of [15164514, 15164515, 15164096, 15164078, 15163495, 15164068, 15164480, 15164097, 15164098, 15164482, 15164698, 15164375, 15164485, 15164469, 15164730, 15164731, 15164732, 15164733, 15164734, 15164735, 15164736, 15164737, 15164738, 15163662, 15164486, 15164519, 15164699, 15164700, 15164487, 15164099] into rvc-qpr3-release

Change-Id: I43c863c2417dbc6e7aac1889894ed49a4dce2f66
diff --git a/src/com/android/launcher3/model/FirstScreenBroadcast.java b/src/com/android/launcher3/model/FirstScreenBroadcast.java
index 5112304..f9ed2c7 100644
--- a/src/com/android/launcher3/model/FirstScreenBroadcast.java
+++ b/src/com/android/launcher3/model/FirstScreenBroadcast.java
@@ -15,6 +15,8 @@
  */
 package com.android.launcher3.model;
 
+import static android.app.PendingIntent.FLAG_IMMUTABLE;
+import static android.app.PendingIntent.FLAG_ONE_SHOT;
 import static android.os.Process.myUserHandle;
 
 import android.app.PendingIntent;
@@ -145,7 +147,7 @@
                 .putStringArrayListExtra(HOTSEAT_ITEM_EXTRA, new ArrayList<>(hotseatItems))
                 .putStringArrayListExtra(WIDGET_ITEM_EXTRA, new ArrayList<>(widgetItems))
                 .putExtra(VERIFICATION_TOKEN_EXTRA, PendingIntent.getActivity(context, 0,
-                        new Intent(), PendingIntent.FLAG_ONE_SHOT)));
+                        new Intent(), FLAG_ONE_SHOT | FLAG_IMMUTABLE)));
     }
 
     private static String getPackageName(ItemInfo info) {