views-desktop: Fix updating the cursor for windows.

views/widget/native_widget_view.cc

Index: views/widget/native_widget_view.cc
diff --git a/views/widget/native_widget_view.cc b/views/widget/native_widget_view.cc
index 85cb30ef6470de0c12af90a904b301b1f6e68e70..c816c0f0aad548bd57ab523bf5a724d5b82af974 100644
--- a/views/widget/native_widget_view.cc
+++ b/views/widget/native_widget_view.cc
@@ -18,7 +18,8 @@ const char NativeWidgetView::kViewClassName[] = "views/NativeWidgetView";
 NativeWidgetView::NativeWidgetView(NativeWidgetViews* native_widget)
     : native_widget_(native_widget),
       sent_create_(false),
-      delete_native_widget_(true) {
+      delete_native_widget_(true),
+      cursor_(NULL) {
 }
 
 NativeWidgetView::~NativeWidgetView() {
@@ -69,6 +70,10 @@ void NativeWidgetView::OnPaint(gfx::Canvas* canvas) {
   delegate()->OnNativeWidgetPaint(canvas);
 }
 
+gfx::NativeCursor NativeWidgetView::GetCursor(const MouseEvent& event) {
+  return cursor_;
+}
+
 bool NativeWidgetView::OnMousePressed(const MouseEvent& event) {
   MouseEvent e(event, this);
   return delegate()->OnMouseEvent(event);