MAC Cookies (patch 2 of N)

This CL contains the algorithmic guts of MAC cookies, including generating
the canonical represntation of the request and signing it using HMAC.  This
CL does not include support for body_hash, which requires some more thought.
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=83600
Review URL: http://codereview.chromium.org/6901121

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@83651 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed