DevTools: Fix CSS styles when showing accessor properties preview console.table.

The console.table did not show the "<exception>" label with red color style
after resolving an accessor property placeholder.

BUG=175898
R=pfeldman,vsevik

Review URL: https://codereview.chromium.org/26616004

git-svn-id: svn://svn.chromium.org/blink/trunk@159226 bbb929c8-8fbe-4397-9dbb-9b2b20218538