Implement a policy to autologin a public account.

chrome/browser/policy/proto/chrome_device_policy.proto

Index: chrome/browser/policy/proto/chrome_device_policy.proto
diff --git a/chrome/browser/policy/proto/chrome_device_policy.proto b/chrome/browser/policy/proto/chrome_device_policy.proto
index bb3b5c86f5989f507556905de13f1a8cd077497e..4f2b307faf74cb7e9113d710ec4af8842cda2e0e 100644
--- a/chrome/browser/policy/proto/chrome_device_policy.proto
+++ b/chrome/browser/policy/proto/chrome_device_policy.proto
@@ -235,6 +235,14 @@ message DeviceLocalAccountsProto {
   // The list of device-local accounts (i.e. accounts without an associated
   // cloud-backed profile) that are available on the device.
   repeated DeviceLocalAccountInfoProto account = 1;
+
+  // The identifier of the device-local account to which the device
+  // should be logged in automatically.

[Mattias Nissler (ping if slow), 2013/02/11 17:33:29]

nit: mention that this is the same ID as in DeviceLocalAccountInfoProto.id

[dconnelly, 2013/02/12 12:19:41]

Done.

+  optional string auto_login_id = 2;
+
+  // The amount of time that should elapse at the signin screen before
+  // automatically logging in.

[Mattias Nissler (ping if slow), 2013/02/11 17:33:29]

nit: mention that this is in milliseconds.

[dconnelly, 2013/02/12 12:19:41]

Done.

+  optional int64 auto_login_delay = 3;
 }
 
 message AllowRedeemChromeOsRegistrationOffersProto {