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 44d124ab908747bcd4117b539e0e9b3f6d40e363..e16ca1800f504b3cec3facf49022e7905a5ac17b 100644
--- a/ui/accessibility/ax_enums.idl
+++ b/ui/accessibility/ax_enums.idl
@@ -471,4 +471,25 @@
     description_from_placeholder,
     description_from_related_element
   };
+
+  // Touch gestures on Chrome OS.
+  enum AXGesture {
+    double_tap,
+    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,

[dcheng, 2016/05/11 01:24:58]

FWIW, something is complaining about trailing commas:
[100/10377] ACTION
//ui/accessibility:ax_gen_schema_generator(//build/toolchain/linux:clang_x64)
../../ui/accessibility/ax_enums.idl(494) : Error : Trailing comma in block.

Though it seems like the error might be advisory? My build hasn't failed yet...

+  };
 };