Remove HistoryPublisher code.

AFAICT, the last clients of this code no longer depend on it, so get
it removed before someone else decides to depend on it.

BUG=161116,294306

Review URL: https://codereview.chromium.org/71723003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235676 0039d316-1c4b-4281-b951-d872f2087c98
[Toolbar Views] Move toolbar files to a new subdirectory.

This mimics the organization of chrome/browser/ui as well.

R=pkasting@chromium.org

Review URL: https://codereview.chromium.org/71743002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235677 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235676
SVN changes up to revision 235677