Fix a typo in liscence file.  ("Googl" --> "Google")

The liscence has been this way since the file was created in http://trac.webkit.org/changeset/78321

Review URL: https://chromiumcodereview.appspot.com/19617006

git-svn-id: svn://svn.chromium.org/blink/trunk@154430 bbb929c8-8fbe-4397-9dbb-9b2b20218538