Port perf.py's _LoginToGoogleAccount to chrome_remote_control

tools/gpu/page_sets/2012Q3.json

 {
   "description": "Pages hand-picked from top-lists in Q32012.",
   "archive_path": "2012Q3.wpr",
+  "credentials_path": "credentials.json",
   "pages": [
     {"url": "http://www.facebook.com/barackobama"},
     {"url": "https://www.google.com/search?q=barack%20obama"},
     {"url": "http://youtube.com"},
     {"url": "http://yahoo.com"},
     {"url": "http://www.baidu.com/s?wd=barack+obama"},
     {"url": "http://en.wikipedia.org/wiki/Wikipedia"},
     {"url": "http://qq.com"},
     {"url": "http://www.amazon.com/Kindle-Fire-Amazon-Tablet/dp/B0051VVOB2"},
     {"url": "http://googleblog.blogspot.com/"},
@@ skipping 201 matching lines @@
     {"url": "http://php.net"},
     {"url": "http://www.target.com/c/women/-/N-5xtd3#?lnk=nav_t_spc_1_0"},
     {"url": "http://dianxin.cn"},
     {"url": "http://www.aizhan.com/siteall/www.youboy.com/"},
     {"url": "http://veiculos-home.mercadolivre.com.br/"},
     {"url": "http://kakaku.com"},
     {"url": "http://flipkart.com"},
     {"url": "http://paipai.com"}
   ]
 }