Add id properties to PointerEvent

ui/events/event.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/events/event.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 
@@ skipping 483 matching lines @@
 void LocatedEvent::UpdateForRootTransform(
     const gfx::Transform& reversed_root_transform) {
   // Transform has to be done at root level.
   gfx::Point3F p(location_);
   reversed_root_transform.TransformPoint(&p);
   location_ = p.AsPointF();
   root_location_ = location_;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// PointerDetails
+
+PointerDetails::PointerDetails() {}
+
+PointerDetails::PointerDetails(EventPointerType pointer_type)
+    : pointer_type(pointer_type),
+      force(std::numeric_limits<float>::quiet_NaN()) {}
+
+PointerDetails::PointerDetails(EventPointerType pointer_type,
+                               float radius_x,
+                               float radius_y,
+                               float force,
+                               float tilt_x,
+                               float tilt_y,
+                               float tangential_pressure,
+                               int twist,
+                               uint32_t id)
+    : pointer_type(pointer_type),
+      // If we aren't provided with a radius on one axis, use the
+      // information from the other axis.
+      radius_x(radius_x > 0 ? radius_x : radius_y),
+      radius_y(radius_y > 0 ? radius_y : radius_x),
+      force(force),
+      tilt_x(tilt_x),
+      tilt_y(tilt_y),
+      tangential_pressure(tangential_pressure),
+      twist(twist),
+      id(id) {}
+
+PointerDetails::PointerDetails(EventPointerType pointer_type,
+                               const gfx::Vector2d& offset)
+    : pointer_type(pointer_type),
+      force(std::numeric_limits<float>::quiet_NaN()),
+      offset(offset) {}
+
+PointerDetails::PointerDetails(const PointerDetails& other) = default;
+
+////////////////////////////////////////////////////////////////////////////////
 // MouseEvent
 
 MouseEvent::MouseEvent(const base::NativeEvent& native_event)
     : LocatedEvent(native_event),
       changed_button_flags_(GetChangedMouseButtonFlagsFromNative(native_event)),
       pointer_details_(GetMousePointerDetailsFromNative(native_event)) {
   latency()->AddLatencyNumberWithTimestamp(
       INPUT_EVENT_LATENCY_ORIGINAL_COMPONENT, 0, 0,
       base::TimeTicks::FromInternalValue(time_stamp().ToInternalValue()), 1);
   latency()->AddLatencyNumber(INPUT_EVENT_LATENCY_UI_COMPONENT, 0, 0);
@@ skipping 876 matching lines @@
                    flags | EF_FROM_TOUCH),
       details_(details),
       unique_touch_event_id_(unique_touch_event_id) {
   latency()->set_source_event_type(ui::SourceEventType::TOUCH);
 }
 
 GestureEvent::~GestureEvent() {
 }
 
 }  // namespace ui