Adopt ui::GestureConfiguration on Android

ui/events/gesture_detection/gesture_configuration.cc

+// Copyright (c) 2013 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/events/gesture_detection/gesture_configuration.h"
+
+namespace ui {
+
+GestureConfiguration::GestureConfiguration()
+    : default_radius_(25),
+      max_distance_for_two_finger_tap_in_pixels_(300),
+      fling_max_cancel_to_down_time_in_ms_(400),
+      fling_max_tap_gap_time_in_ms_(200),
+      long_press_time_in_ms_(1000),
+      semi_long_press_time_in_ms_(400),
+      max_time_between_double_click_in_ms_(700),
+      max_separation_for_gesture_touches_in_pixels_(150),
+      max_swipe_deviation_angle_(20),
+      max_touch_down_duration_for_click_in_ms_(800),
+      max_touch_move_in_pixels_for_click_(15),
+      max_distance_between_taps_for_double_tap_(20),
+      min_distance_for_pinch_scroll_in_pixels_(20),
+      min_pinch_update_distance_in_pixels_(5),
+      min_scroll_velocity_(30.0f),
+      min_swipe_speed_(20),
+
+      // If this is too small, we currently can get single finger pinch zoom.
+      // See
+      // crbug.com/357237 for details.
+      min_scaling_span_in_pixels_(125),
+      show_press_delay_in_ms_(150),
+      fling_velocity_cap_(17000.0f),
+      tab_scrub_activation_delay_in_ms_(200) {
+// TODO(jdduke): Disable and remove entirely when issues with intermittent
+// scroll end detection on the Pixel are resolved, crbug.com/353702.
+#if defined(OS_CHROMEOS)
+  scroll_debounce_interval_in_ms_ = 30;
+#else
+  scroll_debounce_interval_in_ms_ = 0;
+#endif
+}
+
+GestureConfiguration::~GestureConfiguration() {
+}
+
+GestureDetector::Config GestureConfiguration::DefaultGestureDetectorConfig() {
+  GestureDetector::Config config;
+  config.longpress_timeout =
+      base::TimeDelta::FromMilliseconds(long_press_time_in_ms());
+  config.showpress_timeout =
+      base::TimeDelta::FromMilliseconds(show_press_delay_in_ms());
+  config.double_tap_timeout =
+      base::TimeDelta::FromMilliseconds(semi_long_press_time_in_ms());
+  config.touch_slop = max_touch_move_in_pixels_for_click();
+  config.double_tap_slop = max_distance_between_taps_for_double_tap();
+  config.minimum_fling_velocity = min_scroll_velocity();
+  config.maximum_fling_velocity = fling_velocity_cap();
+
+  return config;
+}
+
+ScaleGestureDetector::Config
+GestureConfiguration::DefaultScaleGestureDetectorConfig() {
+  ScaleGestureDetector::Config config;
+  config.span_slop = span_slop();
+  config.min_scaling_touch_major = min_scaling_touch_major();
+  config.min_scaling_span = min_scaling_span_in_pixels();
+  config.min_pinch_update_span_delta = min_pinch_update_span_delta();
+  return config;
+}
+
+}  // namespace ui