Update TestExpectations for threaded animation and transition tests

This updates expectations for tests in virtual/threaded/animations and
virtual/threaded/transitions.

BUG=248938

Review URL: https://chromiumcodereview.appspot.com/24255014

git-svn-id: svn://svn.chromium.org/blink/trunk@158222 bbb929c8-8fbe-4397-9dbb-9b2b20218538