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 739 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::kMousePointerId = 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