Update to Chromium version 87.0.4280.0 (#812852)

- Windows: VS2015 Update 2 is now the minimum version requirement for linking
  cef_sandbox from official build binary distributions.

libcef/browser/osr/render_widget_host_view_osr_win.cc

@@ -172,3 +172,8 @@ CefCursorHandle CefRenderWidgetHostViewOSR::GetPlatformCursor(
 
   return LoadCursor(module_handle, cursor_id);
 }
+
+CefCursorHandle CefRenderWidgetHostViewOSR::ToCursorHandle(
+    ui::PlatformCursor cursor) {
+  return cursor;
+}