gesture recognizer: Expose bounding-box for the points in a gesture-event.

ui/base/gestures/gesture_configuration.h

 // 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.
 
 #ifndef UI_BASE_GESTURES_GESTURE_CONFIGURATION_H_
 #define UI_BASE_GESTURES_GESTURE_CONFIGURATION_H_
 
 #include "base/basictypes.h"
 #include "ui/base/ui_export.h"
 
 namespace ui {
 
 // TODO: Expand this design to support multiple OS configuration
 // approaches (windows, chrome, others).  This would turn into an
 // abstract base class.
 
 class UI_EXPORT GestureConfiguration {
  public:
   // Ordered alphabetically ignoring underscores, to align with the
   // associated list of prefs in gesture_prefs_aura.cc.
   static int default_radius() {
     return default_radius_;
   }
+  static void set_default_radius(int radius) { default_radius_ = radius; }
   static double long_press_time_in_seconds() {
     return long_press_time_in_seconds_;
   }
   static double semi_long_press_time_in_seconds() {
     return semi_long_press_time_in_seconds_;
   }
   static double max_distance_for_two_finger_tap_in_pixels() {
     return max_distance_for_two_finger_tap_in_pixels_;
   }
   static void set_max_distance_for_two_finger_tap_in_pixels(double val) {
@@ skipping 134 matching lines @@
   static int points_buffered_for_velocity_;
   static double rail_break_proportion_;
   static double rail_start_proportion_;
 
   DISALLOW_COPY_AND_ASSIGN(GestureConfiguration);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_GESTURES_GESTURE_CONFIGURATION_H_