Avoid an extra GestureDetector instance for double-tap drag zooming

ui/events/gesture_detection/gesture_provider_unittest.cc

Index: ui/events/gesture_detection/gesture_provider_unittest.cc
diff --git a/ui/events/gesture_detection/gesture_provider_unittest.cc b/ui/events/gesture_detection/gesture_provider_unittest.cc
index bb7604844bf7a5901a0ac15a009d9b5ab3e3c358..bf2ea6da05358b74718b62c6d79b059a35c0122f 100644
--- a/ui/events/gesture_detection/gesture_provider_unittest.cc
+++ b/ui/events/gesture_detection/gesture_provider_unittest.cc
@@ -45,9 +45,6 @@ GestureProvider::Config CreateDefaultConfig() {
   // the second tap at microsecond intervals.
   sConfig.gesture_detector_config.double_tap_timeout = kOneMicrosecond * 4;
   sConfig.gesture_detector_config.double_tap_min_time = kOneMicrosecond * 2;
-
-  sConfig.scale_gesture_detector_config.gesture_detector_config =
-      sConfig.gesture_detector_config;
   return sConfig;
 }