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
SkColor BrowserView::GetInfoBarSeparatorColor() const {
  return (IsTabStripVisible() || !frame_->ShouldUseNativeFrame()) ?
      ThemeService::GetDefaultColor(ThemeService::COLOR_TOOLBAR_SEPARATOR) :
      SK_ColorBLACK;
}

SkColor BrowserView::GetInfoBarSeparatorColor() const {
  return (IsTabStripVisible() || !frame_->ShouldUseNativeFrame()) ?
      ThemeService::GetDefaultColor(ThemeService::COLOR_TOOLBAR_SEPARATOR) :
      SK_ColorBLACK;
}
