[NaCl SDK Docs] Modify SDK document generation for the switch to Chromesite.

BUG=none

Review URL: https://codereview.chromium.org/113983004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244908 0039d316-1c4b-4281-b951-d872f2087c98
sync: turn on session sync v2

BUG=98892
TBR=jyasskin@chromium.org, msw@chromium.org

Review URL: https://codereview.chromium.org/130403003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244909 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 244908
SVN changes up to revision 244909