[checklicenses] OK to use 'BSD (3 clause) GPL (v2)' dual license

TBR=thestig

BUG=none

Review URL: https://codereview.chromium.org/14324008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194965 0039d316-1c4b-4281-b951-d872f2087c98

tools/checklicenses/checklicenses.py

@@ -40,6 +40,7 @@ WHITELISTED_LICENSES = [
     'BSD (2 clause)',
     'BSD (2 clause) MIT/X11 (BSD like)',
     'BSD (3 clause)',
+    'BSD (3 clause) GPL (v2)',
     'BSD (3 clause) ISC',
     'BSD (3 clause) LGPL (v2 or later)',
     'BSD (3 clause) LGPL (v2.1 or later)',