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
gfx::Point BrowserView::OffsetPointForToolbarBackgroundImage(
    const gfx::Point& point) const {
  gfx::Point window_point(point + GetMirroredPosition().OffsetFromOrigin());
  window_point.Offset(frame_->GetThemeBackgroundXInset(),
                      -frame_->GetTabStripInsets(false).top);
  return window_point;
}

gfx::Point BrowserView::OffsetPointForToolbarBackgroundImage(
    const gfx::Point& point) const {
  gfx::Point window_point(point + GetMirroredPosition().OffsetFromOrigin());
  window_point.Offset(frame_->GetThemeBackgroundXInset(),
                      -frame_->GetTabStripInsets(false).top);
  return window_point;
}
