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::EnterFullscreen(
    const GURL& url, FullscreenExitBubbleType bubble_type) {
  if (IsFullscreen())
    return;  // Nothing to do.

  ProcessFullscreen(true, FOR_DESKTOP, url, bubble_type);
}

void BrowserView::EnterFullscreen(
    const GURL& url, FullscreenExitBubbleType bubble_type) {
  if (IsFullscreen())
    return;  // Nothing to do.

  ProcessFullscreen(true, FOR_DESKTOP, url, bubble_type);
}
