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
BrowserWindow* BrowserWindow::CreateBrowserWindow(Browser* browser) {
  BrowserView* view = new BrowserView(browser);
  (new BrowserFrame(view))->InitBrowserFrame();
  view->GetWidget()->non_client_view()->SetAccessibleName(
      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
  return view;
}

BrowserWindow* BrowserWindow::CreateBrowserWindow(Browser* browser) {
  BrowserView* view = new BrowserView(browser);
  (new BrowserFrame(view))->InitBrowserFrame();
  view->GetWidget()->non_client_view()->SetAccessibleName(
      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
  return view;
}
