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 BrowserView::SaveWindowPlacement(const gfx::Rect& bounds,
                                      ui::WindowShowState show_state) {
  if (!ShouldSaveOrRestoreWindowPos())
    return;

  if (!IsFullscreen() && chrome::ShouldSaveWindowPlacement(browser_.get())) {
    WidgetDelegate::SaveWindowPlacement(bounds, show_state);
    chrome::SaveWindowPlacement(browser_.get(), bounds, show_state);
  }
}

void BrowserView::SaveWindowPlacement(const gfx::Rect& bounds,
                                      ui::WindowShowState show_state) {
  if (!ShouldSaveOrRestoreWindowPos())
    return;

  if (!IsFullscreen() && chrome::ShouldSaveWindowPlacement(browser_.get())) {
    WidgetDelegate::SaveWindowPlacement(bounds, show_state);
    chrome::SaveWindowPlacement(browser_.get(), bounds, show_state);
  }
}
