Chrome扩展程序：打开标签页，转到网址，填写表单并提交表单

我按照这里的教程
http://www.blackweb20.com/2010/01/11/creating-your-own-google-chrome-extension/

我可以打开一个带有自定义扩展的选项卡，并加载一个URL，我想填写并提交一个表单与JavaScript在打开的页面。例如，我可以在google.com上提交搜索吗？

I can open fine a tab with a custom extension and load a url, and I would like to fill and submit a form with javascript on the page opened. For example, could I submit a search on google.com?

这里是我到目前为止：

manifest.json
{
  "name": "My First Extension",
  "version": "1.0",
  "description": "The first extension that I made.",
  "browser_action": {
    "default_icon": "icon.png"
  },
  "background_page": "background.html",
  "permissions": [
    "tabs"
  ]
}

background.html

background.html

<script>

// get tab http://*.com/questions/1979583/how-can-i-get-the-url-for-a-google-chrome-tab


chrome.browserAction.onClicked.addListener(function(tab) {
  chrome.tabs.create({'url': "http://google.com"}, function(tab) {
    // Tab opened. Wait until page loads, from here it is not working
    jQuery(document).ready(function() {
        jQuery('#tsf').submit();
        });
  });
});
</script>