Populate details of Mojo gesture events

mojo/services/input_events/public/interfaces/input_events.mojom

 // Copyright 2014 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.
 
 module mojo;
 
 import "geometry/public/interfaces/geometry.mojom";
 import "input_events/public/interfaces/input_event_constants.mojom";
 import "input_events/public/interfaces/input_key_codes.mojom";
 
@@ skipping 38 matching lines @@
 
   // Like |text|, but unmodified by concurrently held modifier keys (except
   // shift). Corresponds to blink::WebKeyboardEvent::unmodifiedText.
   uint16 unmodified_text;
 };
 
 struct TouchData {
   int32 pointer_id;
 };
 
+struct GestureData {
+  // A bounding box for all the input events that contributed to this gesture.
+  RectF? bounding_box;
+
+  // GESTURE_SCROLL_UPDATE
+  float scroll_x;
+  float scroll_y;
+
+  // SCROLL_FLING_START
+  float velocity_x;
+  float velocity_y;
+
+  // GESTURE_PINCH_UPDATE
+  float scale;
+
+  // GESTURE_SWIPE
+  bool swipe_left;
+  bool swipe_right;
+  bool swipe_up;
+  bool swipe_down;
+
+  // GESTURE_TAP and GESTURE_TAP_UNCONFIRMED and GESTURE_DOUBLE_TAP
+  int32 tap_count;
+};
+
 struct MouseWheelData {
   int32 x_offset;
   int32 y_offset;
 };
 
 struct Event {
   EventType action;
   EventFlags flags;
   int64 time_stamp;
   LocationData? location_data;
   KeyData? key_data;
   TouchData? touch_data;
+  GestureData? gesture_data;
   MouseWheelData? wheel_data;
 };