GitLab

This is in the form of static RegisterHost/UnregisterHost functions in the RenderProcessHostImpl class.

BUG=98716
TEST=No change in functionality. Hopefully it all compiles and works.
Review URL: http://codereview.chromium.org/8597005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@110635 0039d316-1c4b-4281-b951-d872f2087c98