Add inbox_app to silk page set

tools/perf/page_sets/key_silk_cases.json

 {
   "description": "Pages hand-picked for project Silk.",
   "archive_data_file": "data/key_silk_cases.json",
   "credentials_path": "data/credentials.json",
   "user_agent_type": "mobile",
   "smoothness": { "action": "scroll" },
   "pages": [
     {
       "url": "http://groupcloned.com/test/plain/list-recycle-transform.html",
       "why": "best case infinite scroll from sencha",
@@ skipping 91 matching lines @@
       "smoothness": { "action": "wait", "seconds": 5 }
     },
     {
       "url": "http://jsfiddle.net/3yDKh/3/show",
       "why": "margin top animation",
       "navigate_steps" : [
         { "action": "navigate" },
         { "action": "wait", "seconds": 2 }
       ],
       "smoothness": { "action": "wait", "seconds": 5 }
+    },
+    {
+      "url": "file://key_silk_cases/app-drawer.html",
+      "navigate_steps" : [
+        { "action": "navigate" },
+        { "action": "wait", "seconds": 2 }
+      ],
+      "smoothness": {
+        "action": "slide_drawer"
+      },
+      "slide_drawer": [
+        {
+          "action": "swipe",
+          "element_function": "function(callback) { callback(document.getElementById('nav-drawer')); }",
+          "distance": 200,
+          "direction": "left",
+          "left_start_percentage": 0.8,
+          "top_start_percentage": 0.2
+        },
+        { "action": "wait", "seconds": 2 }

[nduca, 2014/01/07 20:21:53]

is this wait us waiting for an animation to finish?

if so, i think you need to use wait_after feature of
https://codereview.chromium.org/117283004/ here so that telemetry sees the
slide_drawer action as the thing being measured.

[abarth-chromium, 2014/01/07 20:26:27]

Yes.  Without this, telemetry complained that we were only measuring 2 frames
Makes sense.  Should I wait for that CL to land, or should I iterate on this
action after landing this CL?  For context, I expect to iterate on
app-drawer.html in the future.  I'm mostly interested in getting an end-to-end
example working so that Ojan and I can scale it up.

Related question: I'm surprised there isn't a "duration" or "speed" attribute
for swipe.  I was expecting to be able to control how quickly gesture proceeded.
 For example, a fast gesture results in a "fling" animation and a slow gesture
results in a "settle" animation.

+      ]
     }
   ]
 }