Always send the full tab object in ExtensionAction click event.

chrome/test/data/extensions/api_test/messaging/connect/test.js

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 JSON.parse = function() {
   return "JSON.parse clobbered by extension.";
 };
 
 JSON.stringify = function() {
   return "JSON.stringify clobbered by extension.";
@@ skipping 47 matching lines @@
       port.onMessage.addListener(function(msg) {
         chrome.test.assertEq(msg.portName, portName);
         port.disconnect();
         chrome.test.succeed();
       });
     },
 
     // Tests that postMessage from the tab and its response works.
     function postMessageFromTab() {
       chrome.extension.onConnect.addListener(function(port) {
+        chrome.test.assertTrue(Boolean(port.sender.tab.url));
+        chrome.test.assertTrue(Boolean(port.sender.tab.title));
+        chrome.test.assertTrue(Boolean(port.sender.tab.id));
         port.onMessage.addListener(function(msg) {
           chrome.test.assertTrue(msg.testPostMessageFromTab);
           port.postMessage({success: true, portName: port.name});
           chrome.test.log("postMessageFromTab: got message from tab");
         });
       });
 
       var port = chrome.tabs.connect(testTab.id);
       port.postMessage({testPostMessageFromTab: true});
       chrome.test.log("postMessageFromTab: sent first message to tab");
@@ skipping 83 matching lines @@
     function disconnectOnClose() {
       var port = chrome.tabs.connect(testTab.id);
       port.postMessage({testDisconnectOnClose: true});
       port.onDisconnect.addListener(function() {
         chrome.test.succeed();
         testTab = null; // the tab is about:blank now.
       });
     },
   ]);
 });