GitLab

Print Preview: Add some debug logging so one can time when print preview operations starts/finishes.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6979005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@86660 0039d316-1c4b-4281-b951-d872f2087c98