Docserver: Render the title and table of contents after rendering each page,
not before. This gains flexibility (importantly, the flexibility to infer the
title/TOC of page content served outside of the extensions/apps conventions)
for cachability. However, benchmarking shows negligible performance degradation.

BUG=320339
R=yoz@chromium.org

Review URL: https://codereview.chromium.org/89223002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237465 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237465
Add the infobar back in for blocked plugins

BUG=323674

Review URL: https://codereview.chromium.org/89213002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237466 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237466