Try to remove invalidated stubs before falling back to checking the constant state.

BUG=chromium:260585
R=hpayer@chromium.org

Review URL: https://chromiumcodereview.appspot.com/19267019

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15693 ce2b1a6d-e550-0410-aec6-3dcde31c8c00