Eliminate LocationBarView::Delegate::OnInputInProgress(), and just do it
directly in LocationBarView.

The SimpleWebViewDialog has a non-NULL ToolbarModel, so there's no obvious
reason this needs to be any different for it.

BUG=none
TEST=none
R=sky@chromium.org

Review URL: https://codereview.chromium.org/25426005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226906 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226906