events: Preserve pointer details in native MouseEvent constructor

ui/events/x/events_x.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_constants.h"
 
 #include <string.h>
 #include <X11/extensions/XInput.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/XKBlib.h>
@@ skipping 657 matching lines @@
         default:
           break;
       }
     }
     default:
       break;
   }
   return 0;
 }
 
+PointerDetails GetMousePointerDetailsFromNative(
+    const base::NativeEvent& native_event) {
+  return PointerDetails(EventPointerType::POINTER_TYPE_MOUSE);
+}
+
 gfx::Vector2d GetMouseWheelOffset(const base::NativeEvent& native_event) {
   float x_offset, y_offset;
   if (GetScrollOffsets(
       native_event, &x_offset, &y_offset, NULL, NULL, NULL)) {
     return gfx::Vector2d(static_cast<int>(x_offset),
                          static_cast<int>(y_offset));
   }
 
   int button = native_event->type == GenericEvent ?
       EventButtonFromNative(native_event) : native_event->xbutton.button;
@@ skipping 187 matching lines @@
       xievent->detail =
           UpdateX11EventButton(event->changed_button_flags(), xievent->detail);
       break;
     }
     default:
       break;
   }
 }
 
 }  // namespace ui