Add inbox_app to silk page set

This CL adds an app-style widget called app-drawer to the Silk page set. The
app-drawer widget comes from https://github.com/abarth/app-widgets and is based
on Android's navigation drawer:

http://developer.android.com/design/patterns/navigation-drawer.html

R=nduca@chromium.org
TBR=boliu@chromium.org
BUG=332439

Review URL: https://codereview.chromium.org/120753003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243722 0039d316-1c4b-4281-b951-d872f2087c98

android_webview/tools/webview_licenses.py

@@ -113,6 +113,8 @@ def _CheckLicenseHeaders(excluded_dirs_list, whitelisted_files):
   excluded_dirs_list.append('gin/test')
   # This is a test output directory
   excluded_dirs_list.append('data/dom_perf')
+  # This is a tests directory that doesn't exist in the shipped product.
+  excluded_dirs_list.append('tools/perf/page_sets')
   # Histogram tools, doesn't exist in the snapshot
   excluded_dirs_list.append('tools/histograms')
   # Swarming tools, doesn't exist in the snapshot

tools/perf/page_sets/key_silk_cases.json

@@ -134,6 +134,29 @@
     {
       "url": "file://key_silk_cases/font_wipe.html",
       "smoothness": { "action": "wait", "seconds": 5 }
+    },
+    {
+      "url": "file://key_silk_cases/inbox_app.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,
+          "wait_after": {
+            "javascript": "!document.getElementById('nav-drawer').active"
+          }
+        }
+      ]
     }
   ]
 }