请求：

  POST https://www.googleapis.com/rpc HTTP/1.1
  Host: www.googleapis.com
  Connection: keep-alive
  Content-Length: 159
  Content-Type: application/json

  {"method":"spelling.check","apiVersion":"v1","params": 
  {"text":"cchrome","language":"en","originCountry":"USA", 
  "key":"AIzaSyCLlKc60a3z7lo8deV-hAyDU7rHYgL4HZg"}}

返回：

  HTTP/1.1 200 OK
  Content-Type: application/json; charset=UTF-8
  Cache-Control: no-cache, no-store, max-age=0, must-revalidate
  Pragma: no-cache
  Expires: Fri, 01 Jan 1990 00:00:00 GMT
  Date: Fri, 01 Feb 2013 07:01:26 GMT
  X-Content-Type-Options: nosniff
  X-Frame-Options: SAMEORIGIN
  X-XSS-Protection: 1; mode=block
  Content-Length: 209
  Server: GSE

  {
   "result": {
    "spellingCheckResponse": {
     "misspellings": [
      {
       "charStart": 0,
       "charLength": 7,
       "suggestions": [
        {
         "suggestion": "chrome"
        }
       ]
      }
     ]
    }
   }
  }

看来是没法利用了。shit。

参考

更新：

似乎可以利用。那个API Key似乎又是可以用的

https://www.google.be/complete/search?sugexp=chrome,mod=17&client=chrome&hl=nl&q=about&sugkey=AIzaSyCLlKc60a3z7lo8deV-hAyDU7rHYgL4HZg

["about",["http:\/\/www.imdb.com\/title\/tt0276751\/","about cherry","about a boy"],["About a Boy (2002) - IMDb","",""],[],{"google:suggesttype":["NAVIGATION","QUERY","QUERY"],"google:suggestrelevance":[1200,600,551],"google:verbatimrelevance":1300}]

Google的各种黑科技真是多啊