Stop having renderers use both pids and a monotonically increasing "host_id".  This allows ResourceDispatcher to be used by child processes other than renderers.  I've done minor related cleanup on the way to make the code simpler.
Review URL: http://codereview.chromium.org/42054

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@11509 0039d316-1c4b-4281-b951-d872f2087c98
30 files changed