Update references to the extension messaging APIs to point to the "runtime"

chrome/test/data/panels/context_menu2/test.js

Index: chrome/test/data/panels/context_menu2/test.js
diff --git a/chrome/test/data/panels/context_menu2/test.js b/chrome/test/data/panels/context_menu2/test.js
index 4f27d9e4a6d794d39fff62fcf0425a9c526addb7..3604d5891bb9c236facade5d3bd904f62bc5df68 100644
--- a/chrome/test/data/panels/context_menu2/test.js
+++ b/chrome/test/data/panels/context_menu2/test.js
@@ -8,7 +8,7 @@ function onclick(info) {
 
 chrome.contextMenus.create({"title":"Extension Item Bogey",
                             "onclick": onclick}, function() {
-  if (!chrome.extension.lastError) {
+  if (!chrome.runtime.lastError) {
     chrome.test.sendMessage("created bogey item");
   }
 });