[Aura] Reduce frequency of PinchUpdate events.

ui/events/gesture_detection/gesture_config_helper_aura.cc

Index: ui/events/gesture_detection/gesture_config_helper_aura.cc
diff --git a/ui/events/gesture_detection/gesture_config_helper_aura.cc b/ui/events/gesture_detection/gesture_config_helper_aura.cc
index 9c6603f166f02300b1303985b2fa4a1eb18985fb..faaeb2d70b600d9ca20fcc0074de890cd4ebb73c 100644
--- a/ui/events/gesture_detection/gesture_config_helper_aura.cc
+++ b/ui/events/gesture_detection/gesture_config_helper_aura.cc
@@ -52,6 +52,8 @@ ScaleGestureDetector::Config DefaultScaleGestureDetectorConfig() {
   config.gesture_detector_config = DefaultGestureDetectorConfig();
   config.min_scaling_touch_major = GestureConfiguration::default_radius() * 2;
   config.min_scaling_span = GestureConfiguration::min_scaling_span_in_pixels();
+  config.min_pinch_update_span_delta =
+      GestureConfiguration::min_pinch_update_distance_in_pixels();
   return config;
 }