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
void OmniboxViewViews::OnMouseReleased(const ui::MouseEvent& event) {
  views::Textfield::OnMouseReleased(event);
  if ((event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) &&
      select_all_on_mouse_release_ &&
      !controller()->GetToolbarModel()->WouldReplaceURL()) {
    SelectAll(true);
  }
  select_all_on_mouse_release_ = false;
}

void OmniboxViewViews::OnMouseReleased(const ui::MouseEvent& event) {
  views::Textfield::OnMouseReleased(event);
  if ((event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) &&
      select_all_on_mouse_release_ &&
      !controller()->GetToolbarModel()->WouldReplaceURL()) {
    SelectAll(true);
  }
  select_all_on_mouse_release_ = false;
}
