Change default values of some gesture related constants

ui/base/gestures/gesture_point.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/base/gestures/gesture_point.h"
 
 #include <cmath>
 
 #include "base/basictypes.h"
 #include "ui/base/event.h"
@@ skipping 137 matching lines @@
   return duration < GestureConfiguration::max_seconds_between_double_click();
 }
 
 bool GesturePoint::IsInsideManhattanSquare(const TouchEvent& event) const {
   return ui::gestures::IsInsideManhattanSquare(event.location(),
                                                first_touch_position_);
 }
 
 bool GesturePoint::IsSecondClickInsideManhattanSquare(
     const TouchEvent& event) const {
-  return ui::gestures::IsInsideManhattanSquare(event.location(),
-                                               last_tap_position_);
+  int manhattan_distance = abs(event.location().x() - last_tap_position_.x()) +
+                           abs(event.location().y() - last_tap_position_.y());
+  return manhattan_distance <
+      GestureConfiguration::max_distance_between_taps_for_double_tap();
 }
 
 bool GesturePoint::IsOverMinFlickSpeed() {
   return velocity_calculator_.VelocitySquared() >
       GestureConfiguration::min_flick_speed_squared();
 }
 
 void GesturePoint::UpdateEnclosingRectangle(const TouchEvent& event) {
   int radius;
 
@@ skipping 18 matching lines @@
                  event.location().y() - radius,
                  radius * 2,
                  radius * 2);
   if (IsInClickWindow(event))
     enclosing_rect_ = enclosing_rect_.Union(rect);
   else
     enclosing_rect_ = rect;
 }
 
 }  // namespace ui