Try to cut down Browser/TabContents header dependencies.

- Forward declare printing::PrintViewManager in TabContents
- tab_contents.h shouldn't depend on autocomplete_edit.h
- Pull logging out of Browser through PageTransitionTypes

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/2934004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@51995 0039d316-1c4b-4281-b951-d872f2087c98