Set default multi-profile policy to not-allowed.

chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc

Index: chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc
diff --git a/chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc b/chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc
index 1dc5111a831da02dbb6aa0803d86b10b3bb914a5..8c9d69c16f53f4c534c0b37014cb62bd83019158 100644
--- a/chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc
+++ b/chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc
@@ -280,13 +280,13 @@ void UserCloudPolicyManagerChromeOS::OnComponentCloudPolicyUpdated() {
 void UserCloudPolicyManagerChromeOS::GetChromePolicy(PolicyMap* policy_map) {
   CloudPolicyManager::GetChromePolicy(policy_map);
 
-  // Default multi-profile behavior for managed accounts to primary-only.
+  // Default multi-profile behavior for managed accounts to not-allowed.
   if (store()->has_policy() &&
       !policy_map->Get(key::kChromeOsMultiProfileUserBehavior)) {
     policy_map->Set(key::kChromeOsMultiProfileUserBehavior,
                     POLICY_LEVEL_MANDATORY,
                     POLICY_SCOPE_USER,
-                    new base::StringValue("primary-only"),
+                    new base::StringValue("not-allowed"),
                     NULL);
   }
 }