Added definition of the policy DeviceLoginScreenDomainAutoComplete.

chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc

Index: chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc
diff --git a/chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc b/chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc
index 1d79cd1b2799c3dd1f4addf23ff69a4937193981..bfc5b14666ff5753cc63e5c249628475e7629644 100644
--- a/chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc
+++ b/chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc
@@ -585,6 +585,7 @@ void DecodeAccessibilityPolicies(const em::ChromeDeviceSettingsProto& policy,
               container.login_screen_default_screen_magnifier_type()).release(),
           NULL);
     }
+
     if (container.has_login_screen_default_virtual_keyboard_enabled()) {
       policies->Set(
           key::kDeviceLoginScreenDefaultVirtualKeyboardEnabled,
@@ -594,6 +595,18 @@ void DecodeAccessibilityPolicies(const em::ChromeDeviceSettingsProto& policy,
               container.login_screen_default_virtual_keyboard_enabled()),
           NULL);
     }
+
+    // The behavior when policy is not set and when it is set to an empty string
+    // is the same. Thus lets add policy to the map only if it is set and its
+    // value is not an empty string.
+    if (container.has_login_screen_domain_auto_complete() &&
+        !container.login_screen_domain_auto_complete().empty()) {
+      policies->Set(
+          key::kDeviceLoginScreenDomainAutoComplete, POLICY_LEVEL_MANDATORY,
+          POLICY_SCOPE_MACHINE,
+          new base::StringValue(container.login_screen_domain_auto_complete()),
+          nullptr);
+    }
   }
 }