always link chrome_shared2.css, never inline

previously we inlined because chrome_shared2.css used grit ifdefs, and there was no recursive flattening. Now there is recursive flattening, and also we don't use grit ifdefs in there any more.

(also link some more shared resources)

BUG=103688
TEST=manual


Review URL: http://codereview.chromium.org/9836049

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@128688 0039d316-1c4b-4281-b951-d872f2087c98