SDK upgrade is necessary to support dynamic/webfont because SDK 6.0 does not have
t2embapi.h and t2embed.lib. SDK 6.1 is compatible with WIn XP and VS 2005 or later.

FYI:
http://codereview.chromium.org/14084/show is the CL for adding web/dynamic font support. 
Review URL: http://codereview.chromium.org/14908

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@7500 0039d316-1c4b-4281-b951-d872f2087c98