Moving disabled shape and exclusion style tests to the virtual test suite

CSS Exclusions and Shapes have tests to make sure they do not
expose CSS properties when disabled in stable builds. These
tests are more appropriate to the webexposed virtual test suite.

BUG=248304

Review URL: https://chromiumcodereview.appspot.com/23484013

git-svn-id: svn://svn.chromium.org/blink/trunk@157149 bbb929c8-8fbe-4397-9dbb-9b2b20218538