Don't populate URL data in WebDropData when dragging files.

This is considered a potential security issue as well, since it leaks
filesystem paths.

BUG=332579

Review URL: https://codereview.chromium.org/135633002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244538 0039d316-1c4b-4281-b951-d872f2087c98
views::View* ConvertPointToViewAndGetTooltipHandler(
    views::View* source,
    views::View* dest,
    const gfx::Point& point_in_source) {
  gfx::Point dest_point(point_in_source);
  views::View::ConvertPointToTarget(source, dest, &dest_point);
  return dest->GetTooltipHandlerForPoint(dest_point);
}

views::View* ConvertPointToViewAndGetTooltipHandler(
    views::View* source,
    views::View* dest,
    const gfx::Point& point_in_source) {
  gfx::Point dest_point(point_in_source);
  views::View::ConvertPointToTarget(source, dest, &dest_point);
  return dest->GetTooltipHandlerForPoint(dest_point);
}
