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
bool BrowserView::SplitHandleMoved(views::SingleSplitView* sender) {
  for (int i = 0; i < sender->child_count(); ++i)
    sender->child_at(i)->InvalidateLayout();
  SchedulePaint();
  Layout();
  return false;
}

bool BrowserView::SplitHandleMoved(views::SingleSplitView* sender) {
  for (int i = 0; i < sender->child_count(); ++i)
    sender->child_at(i)->InvalidateLayout();
  SchedulePaint();
  Layout();
  return false;
}
