Add pointer id to the WebMouseEvent's constructors

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 514 matching lines @@
       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(pointer_id) {
   if (pointer_id == PointerDetails::kUnknownPointerId) {
     id = pointer_type == EventPointerType::POINTER_TYPE_MOUSE
-             ? MouseEvent::kMousePointerId
+             ? MouseEvent::kDefaultMousePointerId
              : 0;
   }
 }
 
 PointerDetails::PointerDetails(EventPointerType pointer_type,
                                const gfx::Vector2d& pointer_offset,
                                int pointer_id)
     : PointerDetails(pointer_type, pointer_id) {
   offset = pointer_offset;
 }
@@ skipping 204 matching lines @@
       f &= ~EF_IS_TRIPLE_CLICK;
       break;
     case 3:
       f &= ~EF_IS_DOUBLE_CLICK;
       f |= EF_IS_TRIPLE_CLICK;
       break;
   }
   set_flags(f);
 }
 
-const int MouseEvent::kMousePointerId = std::numeric_limits<int32_t>::max();
+const int MouseEvent::kDefaultMousePointerId = std::numeric_limits<int>::max();
 
 ////////////////////////////////////////////////////////////////////////////////
 // MouseWheelEvent
 
 MouseWheelEvent::MouseWheelEvent(const base::NativeEvent& native_event)
     : MouseEvent(native_event),
       offset_(GetMouseWheelOffset(native_event)) {
 }
 
 MouseWheelEvent::MouseWheelEvent(const ScrollEvent& scroll_event)
@@ skipping 675 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