Merge the mojo blink type converter into ui/events/blink

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 648 matching lines @@
     : MouseEvent(scroll_event),
       offset_(gfx::ToRoundedInt(scroll_event.x_offset()),
               gfx::ToRoundedInt(scroll_event.y_offset())) {
   SetType(ET_MOUSEWHEEL);
 }
 
 MouseWheelEvent::MouseWheelEvent(const MouseEvent& mouse_event,
                                  int x_offset,
                                  int y_offset)
     : MouseEvent(mouse_event), offset_(x_offset, y_offset) {
-  DCHECK(type() == ET_MOUSEWHEEL);
+  SetType(ET_MOUSEWHEEL);
 }
 
 MouseWheelEvent::MouseWheelEvent(const MouseWheelEvent& mouse_wheel_event)
     : MouseEvent(mouse_wheel_event),
       offset_(mouse_wheel_event.offset()) {
   DCHECK(type() == ET_MOUSEWHEEL);
 }
 
 MouseWheelEvent::MouseWheelEvent(const gfx::Vector2d& offset,
                                  const gfx::Point& location,
@@ skipping 626 matching lines @@
                    gfx::PointF(x, y),
                    time_stamp,
                    flags | EF_FROM_TOUCH),
       details_(details),
       unique_touch_event_id_(unique_touch_event_id) {}
 
 GestureEvent::~GestureEvent() {
 }
 
 }  // namespace ui