diff -r 000000000000 -r 6474c204b198 mobile/android/base/webapp/TaskKiller.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/webapp/TaskKiller.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko.webapp;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.util.Log;
+
+/**
+ * This BroadcastReceiver is registered in the AndroidManifest.xml.in file.
+ *
+ * <p>It listens for intents sent by synthesized APKs when the task has been ended.
+ * e.g. when the user has swiped it out of the Recent Apps List.</p>
+ *
+ */
+public class TaskKiller extends BroadcastReceiver {
+
+    private static final String LOGTAG = "GeckoWebappTaskKiller";
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        String packageName = intent.getStringExtra("packageName");
+        int slot = Allocator.getInstance(context).getIndexForApp(packageName);
+        if (slot >= 0) {
+            EventListener.killWebappSlot(context, slot);
+        } else {
+            Log.w(LOGTAG, "Asked to kill " + packageName + " but this runtime (" + context.getPackageName() + ") doesn't know about it.");
+        }
+    }
+
+}