Make touch-action apply to double-tap zoom

content/browser/renderer_host/input/touch_action_filter.h

Index: content/browser/renderer_host/input/touch_action_filter.h
diff --git a/content/browser/renderer_host/input/touch_action_filter.h b/content/browser/renderer_host/input/touch_action_filter.h
index d4fb4b5550d990fbf715650a01ad032ca3cbc3a6..17cf59eeb2fee612a805d84232b3e9834cc0dcaf 100644
--- a/content/browser/renderer_host/input/touch_action_filter.h
+++ b/content/browser/renderer_host/input/touch_action_filter.h
@@ -44,6 +44,10 @@ private:
   // Whether GesturePinch events should be discarded due to touch-action.
   bool drop_pinch_gesture_events_;
 
+  // Whether a tap ending event in this sequence should be discarded because a
+  // previous GestureTapUnconfirmed event was turned into a GestureTap.
+  bool drop_current_tap_ending_event_;
+
   // What touch actions are currently permitted.
   content::TouchAction allowed_touch_action_;