Make touch accessibility gestures work with ChromeVox Next

ui/accessibility/ax_enums.idl

Index: ui/accessibility/ax_enums.idl
diff --git a/ui/accessibility/ax_enums.idl b/ui/accessibility/ax_enums.idl
index e8299f84099a0d802d3d4aa227eb7631e3cebb3a..bfc4a064c34f2a3073a55aeb65530e563904d845 100644
--- a/ui/accessibility/ax_enums.idl
+++ b/ui/accessibility/ax_enums.idl
@@ -456,4 +456,24 @@
     description_from_placeholder,
     description_from_related_element
   };
+
+  // Touch gestures on Chrome OS.
+  enum AXGesture {
+    swipe_left_1,
+    swipe_up_1,
+    swipe_right_1,
+    swipe_down_1,
+    swipe_left_2,
+    swipe_up_2,
+    swipe_right_2,
+    swipe_down_2,
+    swipe_left_3,
+    swipe_up_3,
+    swipe_right_3,
+    swipe_down_3,
+    swipe_left_4,
+    swipe_up_4,
+    swipe_right_4,
+    swipe_down_4,
+  };
 };