Telemetry: Replace actual groupcloned page with test page.

tools/perf/page_sets/key_mobile_sites.json

 {
   "description": "Key mobile sites",
   "archive_data_file": "../data/key_mobile_sites.json",
   "credentials_path": "../data/credentials.json",
   "user_agent_type": "mobile",
   "smoothness": { "action": "scroll" },
   "pages": [
     {
       "url": "http://www.androidpolice.com/2012/10/03/rumor-evidence-mounts-that-an-lg-optimus-g-nexus-is-coming-along-with-a-nexus-phone-certification-program/",
       "why": "crbug.com/242544"
@@ skipping 194 matching lines @@
     },
     {
       "url": "http://www.reddit.com/r/programming/comments/1g96ve",
       "why": "#5 Alexa news"
     },
     {
       "url": "http://www.boingboing.net",
       "why": "Problematic use of fixed position elements"
     },
     {
+      "disabled": "Page behaves non-deterministically, replaced with test version for now",

[tonyg, 2013/09/05 15:32:13]

Should we just remove this instead of disabling it?

Also, perhaps if you could pinpoint the source of the non-determinism, we could
improve web page replay to be able to make that deterministic.

[Dominik Grewe, 2013/09/05 15:38:11]

I tried to figure out what exactly is going on but the page has quite a lot of
obscure JS which doesn't make it easy to understand what's going on. We're
trying to get a deterministic version of the page from the developers, just like
the newly added test page but more similar to the actual page.

I disabled rather than removed it for now because we still don't know what we're
going to do with this page. Should I leave it like that or should I remove it?

       "url": "http://groupcloned.com",
       "why": "crbug.com/172906",
       "navigate_steps": [
         { "action": "navigate" },
         { "action": "wait", "seconds": 5 },
         { "action": "wait", "javascript": "document.getElementById('element-19') !== null && document.getElementById('element-19').contentDocument.getElementById('element-22') !== null && document.getElementById('element-19').contentDocument.getElementsByClassName('container list-item gc-list-item stretched').length !== 0" }
       ],
       "smoothness": {
         "action": "scroll",
         "scroll_requires_touch": true,
         "remaining_scroll_distance_function": "function() { return Math.max(0, 1250 + document.getElementById('element-19').contentDocument.getElementById('element-22').getBoundingClientRect().top); }"
       }
     },
     {
+      "url": "http://groupcloned.com/test/list-images-variable/index.html",
+      "why": "crbug.com/172906",
+      "navigate_steps": [
+        { "action": "navigate" },
+        { "action": "wait", "javascript": "document.getElementById('element-5') !== null" }
+      ],
+      "smoothness": {
+        "action": "scroll",
+        "scroll_requires_touch": true,
+        "remaining_scroll_distance_function": "function() { return Math.max(0, 1250 + document.getElementById('element-5').getBoundingClientRect().top); }"
+      }
+    },
+    {
       "disabled": "Doesn't scroll; crbug.com/249736",
       "url": "http://forecast.io",
       "why": "crbug.com/231413"
     }
   ]
 }