Support KitKat accessibility APIs.

content/test/data/accessibility/list-markers-expected-android.txt

Index: content/test/data/accessibility/list-markers-expected-android.txt
diff --git a/content/test/data/accessibility/list-markers-expected-android.txt b/content/test/data/accessibility/list-markers-expected-android.txt
index 3e99e000e2bb2232521ef79cc0bbb4c180c6ae64..30c054a4db786c44d64fb15d4d709a6b60006a18 100644
--- a/content/test/data/accessibility/list-markers-expected-android.txt
+++ b/content/test/data/accessibility/list-markers-expected-android.txt
@@ -1,16 +1,16 @@
 android.view.View focusable focused scrollable
-    android.widget.ListView item_count=3
-        android.view.View
+    android.widget.ListView collection hierarchical item_count=3 row_count=3
+        android.view.View collection_item
             android.view.View clickable name='•'
             android.view.View clickable name='First item properly groups itself despite'
             android.view.View clickable name='bolded'
             android.view.View clickable name='text.'
-        android.view.View item_index=1
+        android.view.View collection_item item_index=1
             android.view.View clickable name='•'
             android.view.View clickable name='This should also be'
             android.view.View clickable name='seen'
             android.view.View clickable name='as a group.'
-        android.view.View item_index=2
+        android.view.View collection_item item_index=2
             android.view.View clickable name='•'
             android.view.View clickable name='Some'
             android.view.View clickable name='more'