Added the aria-sort state to the accessibility tree.

content/test/data/accessibility/aria/aria-sort-aria-grid-expected-android.txt

Index: content/test/data/accessibility/aria/aria-sort-aria-grid-expected-android.txt
diff --git a/content/test/data/accessibility/aria/aria-sort-aria-grid-expected-android.txt b/content/test/data/accessibility/aria/aria-sort-aria-grid-expected-android.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0182055241a022c84082bb08d3ed36a9ff78af79
--- /dev/null
+++ b/content/test/data/accessibility/aria/aria-sort-aria-grid-expected-android.txt
@@ -0,0 +1,91 @@
+android.webkit.WebView focusable focused scrollable
+    android.widget.GridView collection row_count=3 column_count=1
+        android.view.View
+            android.view.View clickable collection_item heading name='Alphabet' row_span=1 column_span=1
+        android.view.View
+            android.view.View clickable collection_item name='A' row_index=1 row_span=1 column_span=1
+        android.view.View
+            android.view.View clickable collection_item name='B' row_index=2 row_span=1 column_span=1
+        android.view.View
+        android.view.View
+    android.widget.GridView collection row_count=3 column_count=1
+        android.view.View
+            android.view.View clickable collection_item heading name='Alphabet' row_span=1 column_span=1
+        android.view.View
+            android.view.View clickable collection_item name='A' row_index=1 row_span=1 column_span=1
+        android.view.View
+            android.view.View clickable collection_item name='B' row_index=2 row_span=1 column_span=1
+        android.view.View
+        android.view.View
+    android.widget.GridView collection row_count=3 column_count=1
+        android.view.View
+            android.view.View clickable collection_item heading name='Alphabet' row_span=1 column_span=1
+        android.view.View
+            android.view.View clickable collection_item name='A' row_index=1 row_span=1 column_span=1
+        android.view.View
+            android.view.View clickable collection_item name='B' row_index=2 row_span=1 column_span=1
+        android.view.View
+        android.view.View
+    android.widget.GridView collection row_count=3 column_count=1
+        android.view.View
+            android.view.View clickable collection_item heading name='Alphabet' row_span=1 column_span=1
+        android.view.View
+            android.view.View clickable collection_item name='B' row_index=1 row_span=1 column_span=1
+        android.view.View
+            android.view.View clickable collection_item name='A' row_index=2 row_span=1 column_span=1
+        android.view.View
+        android.view.View
+    android.widget.GridView collection row_count=3 column_count=1
+        android.view.View
+            android.view.View clickable collection_item heading name='Alphabet' row_span=1 column_span=1
+        android.view.View
+            android.view.View clickable collection_item name='A' row_index=1 row_span=1 column_span=1
+        android.view.View
+            android.view.View clickable collection_item name='A' row_index=2 row_span=1 column_span=1
+        android.view.View
+        android.view.View
+    android.widget.GridView collection row_count=1 column_count=3
+        android.view.View
+            android.view.View clickable collection_item heading name='Alphabet' row_span=1 column_span=1
+            android.view.View clickable collection_item name='A' row_span=1 column_index=1 column_span=1
+            android.view.View clickable collection_item name='B' row_span=1 column_index=2 column_span=1
+        android.view.View
+        android.view.View
+        android.view.View
+        android.view.View
+    android.widget.GridView collection row_count=1 column_count=3
+        android.view.View
+            android.view.View clickable collection_item heading name='Alphabet' row_span=1 column_span=1
+            android.view.View clickable collection_item name='A' row_span=1 column_index=1 column_span=1
+            android.view.View clickable collection_item name='B' row_span=1 column_index=2 column_span=1
+        android.view.View
+        android.view.View
+        android.view.View
+        android.view.View
+    android.widget.GridView collection row_count=1 column_count=3
+        android.view.View
+            android.view.View clickable collection_item heading name='Alphabet' row_span=1 column_span=1
+            android.view.View clickable collection_item name='A' row_span=1 column_index=1 column_span=1
+            android.view.View clickable collection_item name='B' row_span=1 column_index=2 column_span=1
+        android.view.View
+        android.view.View
+        android.view.View
+        android.view.View
+    android.widget.GridView collection row_count=1 column_count=3
+        android.view.View
+            android.view.View clickable collection_item heading name='Alphabet' row_span=1 column_span=1
+            android.view.View clickable collection_item name='B' row_span=1 column_index=1 column_span=1
+            android.view.View clickable collection_item name='A' row_span=1 column_index=2 column_span=1
+        android.view.View
+        android.view.View
+        android.view.View
+        android.view.View
+    android.widget.GridView collection row_count=1 column_count=3
+        android.view.View
+            android.view.View clickable collection_item heading name='Alphabet' row_span=1 column_span=1
+            android.view.View clickable collection_item name='A' row_span=1 column_index=1 column_span=1
+            android.view.View clickable collection_item name='A' row_span=1 column_index=2 column_span=1
+        android.view.View
+        android.view.View
+        android.view.View
+        android.view.View