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 TabStrip::PaintClosingTabs(gfx::Canvas* canvas, int index) {
  if (tabs_closing_map_.find(index) == tabs_closing_map_.end())
    return;

  const std::vector<Tab*>& tabs = tabs_closing_map_[index];
  for (std::vector<Tab*>::const_reverse_iterator i(tabs.rbegin());
       i != tabs.rend(); ++i) {
    (*i)->Paint(canvas);
  }
}

void TabStrip::PaintClosingTabs(gfx::Canvas* canvas, int index) {
  if (tabs_closing_map_.find(index) == tabs_closing_map_.end())
    return;

  const std::vector<Tab*>& tabs = tabs_closing_map_[index];
  for (std::vector<Tab*>::const_reverse_iterator i(tabs.rbegin());
       i != tabs.rend(); ++i) {
    (*i)->Paint(canvas);
  }
}
