Docserver: roll third_party/handlebar/handlebar.py and tiny server2 change to
accommodate.

TBR=yoz@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/73963003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235744 0039d316-1c4b-4281-b951-d872f2087c98
Remove deprecated v8::External::New calls (chromium side)

BUG=266838
R=dcarney@chromium.org
TBR=eroman@chromium.org,abarth@chromium.org

Review URL: https://codereview.chromium.org/74783006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235745 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235745