Gesture recognition constants should all be stored in the GestureConfiguration object.

ui/aura/test/aura_test_base.cc

Index: ui/aura/test/aura_test_base.cc
diff --git a/ui/aura/test/aura_test_base.cc b/ui/aura/test/aura_test_base.cc
index 592c780f45bb17bfd7c1048cc94f89c842d237d2..39edd8caa3ad68b868da27d052a2cc64c5e4f5a1 100644
--- a/ui/aura/test/aura_test_base.cc
+++ b/ui/aura/test/aura_test_base.cc
@@ -5,6 +5,7 @@
 #include "ui/aura/test/aura_test_base.h"
 
 #include "ui/aura/env.h"
+#include "ui/aura/gestures/gesture_configuration.h"
 #include "ui/aura/monitor_manager.h"
 #include "ui/aura/single_monitor_manager.h"
 #include "ui/aura/root_window.h"
@@ -24,6 +25,25 @@ AuraTestBase::~AuraTestBase() {
 
 void AuraTestBase::SetUp() {
   testing::Test::SetUp();
+
+  // Changing the parameters for gesture recognition shouldn't cause
+  // tests to fail, so we use a separate set of parameters for unit
+  // testing.
+  GestureConfiguration::set_long_press_time_in_seconds(0.5);
+  GestureConfiguration::set_max_seconds_between_double_click(0.7);
+  GestureConfiguration::set_max_separation_for_gesture_touches_in_pixels(150);
+  GestureConfiguration::set_max_touch_down_duration_in_seconds_for_click(0.8);
+  GestureConfiguration::set_max_touch_move_in_pixels_for_click(20);
+  GestureConfiguration::set_min_distance_for_pinch_scroll_in_pixels(20);
+  GestureConfiguration::set_min_flick_speed_squared(550.f * 550.f);
+  GestureConfiguration::set_min_pinch_update_distance_in_pixels(5);
+  GestureConfiguration::set_min_rail_break_velocity(200);
+  GestureConfiguration::set_min_scroll_delta_squared(5 * 5);
+  GestureConfiguration::set_min_touch_down_duration_in_seconds_for_click(0.01);
+  GestureConfiguration::set_points_buffered_for_velocity(10);
+  GestureConfiguration::set_rail_break_proportion(15);
+  GestureConfiguration::set_rail_start_proportion(2);
+
   root_window_.reset(Env::GetInstance()->monitor_manager()->
                      CreateRootWindowForPrimaryMonitor());
   gfx::Screen::SetInstance(new aura::TestScreen(root_window_.get()));