diff -r 000000000000 -r 6474c204b198 mobile/android/base/prompts/PromptService.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/prompts/PromptService.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,68 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; 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.prompts;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.mozilla.gecko.EventDispatcher;
+import org.mozilla.gecko.GeckoAppShell;
+import org.mozilla.gecko.util.GeckoEventListener;
+import org.mozilla.gecko.util.ThreadUtils;
+
+import android.content.Context;
+import android.util.Log;
+
+public class PromptService implements GeckoEventListener {
+    private static final String LOGTAG = "GeckoPromptService";
+
+    private final Context mContext;
+
+    public PromptService(Context context) {
+        GeckoAppShell.getEventDispatcher().registerEventListener("Prompt:Show", this);
+        GeckoAppShell.getEventDispatcher().registerEventListener("Prompt:ShowTop", this);
+        mContext = context;
+    }
+
+    public void destroy() {
+        GeckoAppShell.getEventDispatcher().unregisterEventListener("Prompt:Show", this);
+        GeckoAppShell.getEventDispatcher().unregisterEventListener("Prompt:ShowTop", this);
+    }
+
+    public void show(final String aTitle, final String aText, final PromptListItem[] aMenuList,
+                     final int aChoiceMode, final Prompt.PromptCallback callback) {
+        // The dialog must be created on the UI thread.
+        ThreadUtils.postToUiThread(new Runnable() {
+            @Override
+            public void run() {
+                Prompt p;
+                p = new Prompt(mContext, callback);
+                p.show(aTitle, aText, aMenuList, aChoiceMode);
+            }
+        });
+    }
+
+    // GeckoEventListener implementation
+    @Override
+    public void handleMessage(String event, final JSONObject message) {
+        // The dialog must be created on the UI thread.
+        ThreadUtils.postToUiThread(new Runnable() {
+            @Override
+            public void run() {
+                Prompt p;
+                p = new Prompt(mContext, new Prompt.PromptCallback() {
+                    public void onPromptFinished(String jsonResult) {
+                        try {
+                            EventDispatcher.sendResponse(message, new JSONObject(jsonResult));
+                        } catch(JSONException ex) {
+                            Log.i(LOGTAG, "Error building json response", ex);
+                        }
+                    }
+                });
+                p.show(message);
+            }
+        });
+    }
+}