Uprev polymer library to 2013-11-26

R=kevers
BUG=NONE

Review URL: https://codereview.chromium.org/105403002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238820 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238820