Apply global auto connect ONC policy in GetManagedProperties.

chromeos/test/data/network/policy/managed_onc_disallow_autoconnect_on_unmanaged_wifi2.onc

Index: chromeos/test/data/network/policy/managed_onc_disallow_autoconnect_on_unmanaged_wifi2.onc
diff --git a/chromeos/test/data/network/policy/managed_onc_disallow_autoconnect_on_unmanaged_wifi2.onc b/chromeos/test/data/network/policy/managed_onc_disallow_autoconnect_on_unmanaged_wifi2.onc
new file mode 100644
index 0000000000000000000000000000000000000000..d8c252a9afe8e433a10b55ef9dfd00bfafc95c93
--- /dev/null
+++ b/chromeos/test/data/network/policy/managed_onc_disallow_autoconnect_on_unmanaged_wifi2.onc
@@ -0,0 +1,21 @@
+{
+   "Name": {
+      "Active": "wifi2"
+   },
+   "Type": {
+      "Active": "WiFi"
+   },
+   "WiFi": {
+      "AutoConnect": {
+         "Active": false,
+         "Effective": "UserPolicy",
+         "UserPolicy": false
+      },
+      "SSID": {
+         "Active": "wifi2"
+      },
+      "Security": {
+         "Active": "WPA-PSK"
+      }
+   }
+}