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 Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
  if (!IsPopupOrPanel(source)) {
    NOTREACHED() << "moving invalid browser type";
    return;
  }
  window_->SetBounds(pos);
}

void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
  if (!IsPopupOrPanel(source)) {
    NOTREACHED() << "moving invalid browser type";
    return;
  }
  window_->SetBounds(pos);
}
