pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

mobile/android/components/TabSource.js

@@ -0,0 +1,91 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+ * 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/. */
+"use strict"
+
+const { classes: Cc, interfaces: Ci, manager: Cm, utils: Cu, results: Cr } = Components;
+
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "Prompt",
+                                  "resource://gre/modules/Prompt.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "Messaging",
+                                  "resource://gre/modules/Messaging.jsm");
+
+function TabSource() {
+}
+
+TabSource.prototype = {
+  classID: Components.ID("{5850c76e-b916-4218-b99a-31f004e0a7e7}"),
+  classDescription: "Fennec Tab Source",
+  contractID: "@mozilla.org/tab-source-service;1",
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsITabSource]),
+
+  getTabToStream: function() {
+    let app = Services.wm.getMostRecentWindow("navigator:browser").BrowserApp;
+    let tabs = app.tabs;
+    if (tabs == null || tabs.length == 0) {
+      Services.console.logStringMessage("ERROR: No tabs");
+      return null;
+    }
+
+    let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
+    let title = bundle.GetStringFromName("tabshare.title")
+
+    let prompt = new Prompt({
+      title: title,
+      window: null
+    }).setSingleChoiceItems(tabs.map(function(tab) {
+      let label;
+      if (tab.browser.contentTitle)
+        label = tab.browser.contentTitle;
+      else if (tab.browser.contentURI)
+        label = tab.browser.contentURI.spec;
+      else
+        label = tab.originalURI.spec;
+      return { label: label,
+               icon: "thumbnail:" + tab.id }
+    }));
+
+    let result = null;
+    prompt.show(function(data) {
+      result = data.button;
+    });
+
+    // Spin this thread while we wait for a result.
+    let thread = Services.tm.currentThread;
+    while (result == null) {
+      thread.processNextEvent(true);
+    }
+
+    if (result == -1) {
+      return null;
+    }
+    return tabs[result].browser.contentWindow;
+  },
+
+  notifyStreamStart: function(window) {
+    let app = Services.wm.getMostRecentWindow("navigator:browser").BrowserApp;
+    let tabs = app.tabs;
+    for (var i in tabs) {
+      if (tabs[i].browser.contentWindow == window) {
+        Messaging.sendRequest({ type: "Tab:StreamStart", tabID: tabs[i].id });
+      }
+    }
+  },
+
+  notifyStreamStop: function(window) {
+    let app = Services.wm.getMostRecentWindow("navigator:browser").BrowserApp;
+    let tabs = app.tabs;
+    for (let i in tabs) {
+      if (tabs[i].browser.contentWindow == window) {
+        Messaging.sendRequest({ type: "Tab:StreamStop", tabID: tabs[i].id });
+      }
+    }
+  }
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([TabSource]);