Remove TabContents from TabStripModelObserver::TabDetachedAt.

BUG=107201
TEST=no visible change


Review URL: https://chromiumcodereview.appspot.com/11293205

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@167122 0039d316-1c4b-4281-b951-d872f2087c98
void TabStripGtk::FinishAnimation(TabStripGtk::TabAnimation* animation,
                                  bool layout) {
  active_animation_.reset(NULL);

  for (int i = 0, count = GetTabCount(); i < count; ++i)
    GetTabAt(i)->set_animating_mini_change(false);

  if (layout)
    Layout();
}

void TabStripGtk::FinishAnimation(TabStripGtk::TabAnimation* animation,
                                  bool layout) {
  active_animation_.reset(NULL);

  for (int i = 0, count = GetTabCount(); i < count; ++i)
    GetTabAt(i)->set_animating_mini_change(false);

  if (layout)
    Layout();
}
