events: Preserve pointer details in native MouseEvent constructor

ui/events/events_stub.cc

 // Copyright (c) 2013 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 "base/logging.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/dom/dom_code.h"
 #include "ui/gfx/geometry/point.h"
@@ skipping 38 matching lines @@
   NOTIMPLEMENTED();
   return 0;
 }
 
 int GetChangedMouseButtonFlagsFromNative(
     const base::NativeEvent& native_event) {
   NOTIMPLEMENTED();
   return 0;
 }
 
+PointerDetails GetMousePointerDetailsFromNative(
+    const base::NativeEvent& native_event) {
+  return PointerDetails(EventPointerType::POINTER_TYPE_MOUSE);
+}
+
 gfx::Vector2d GetMouseWheelOffset(const base::NativeEvent& native_event) {
   NOTIMPLEMENTED();
   return gfx::Vector2d();
 }
 
 base::NativeEvent CopyNativeEvent(const base::NativeEvent& event) {
   NOTIMPLEMENTED() <<
       "Don't know how to copy base::NativeEvent for this platform";
   return NULL;
 }
@@ skipping 75 matching lines @@
   return 0;
 }
 
 uint16 UnmodifiedTextFromNative(const base::NativeEvent& native_event) {
   NOTIMPLEMENTED();
   return 0;
 }
 
 
 }  // namespace ui