Update policy backend and testserver for the latest policy protocol

BUG=chromium-os:11253, chromium-os:11254, chromium-os:11255
TEST=DeviceManagementServiceIntegrationTest.WithTestServer

Review URL: http://codereview.chromium.org/6537020

git-svn-id: http://src.chromium.org/svn/trunk/src/chrome/browser/policy/proto@76455 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
4 files changed