GitLab

Since print-preview uses an object tag, relax the object-src restriction in
the content_security_policy.html file.  Also fix typo in print_preview.html
where the object tag has a src="", not a data="" attribute.
Review URL: http://codereview.chromium.org/7566049

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@95850 0039d316-1c4b-4281-b951-d872f2087c98