Greenwire: Gov. Arnold Schwarzenegger (R) was joined by executives from Google Inc., Wal-Mart Stores Inc., YouTube LLC, and designer chairmaker Herman Miller Inc. yesterday to launch a nonprofit group created to help scrub hazardous chemicals from consumer products. The Green Products Innovation Institute, formally announced at Google corporate headquarters here, builds on a 2008 state law that seeks to establish the nation’s first “green chemistry” program. The institute is meant to serve as a …