Disable/enable echo for enterprise device.

chrome/browser/chromeos/settings/device_settings_provider.cc

Index: chrome/browser/chromeos/settings/device_settings_provider.cc
diff --git a/chrome/browser/chromeos/settings/device_settings_provider.cc b/chrome/browser/chromeos/settings/device_settings_provider.cc
index f60f5445fc60662b41b5d35e859f25362091d5d2..80f376b8c4d646dd9b8e9447546a9036c466cebc 100644
--- a/chrome/browser/chromeos/settings/device_settings_provider.cc
+++ b/chrome/browser/chromeos/settings/device_settings_provider.cc
@@ -45,6 +45,7 @@ const char* kKnownSettings[] = {
   kAccountsPrefUsers,
   kAccountsPrefDeviceLocalAccounts,
   kAppPack,
+  kChromeOsRegistrationEnabled,
   kDeviceOwner,
   kIdleLogoutTimeout,
   kIdleLogoutWarningDuration,
@@ -290,6 +291,16 @@ void DeviceSettingsProvider::SetInPolicy() {
     } else {
       NOTREACHED();
     }
+  } else if (prop == kChromeOsRegistrationEnabled) {
+    em::ChromeOsRegistrationEnabledProto* cros_registration_enabled =
+        device_settings_.mutable_cros_registration_enabled();
+    bool cros_registration_enabled_value = true;
+    if (value->GetAsBoolean(&cros_registration_enabled_value)) {
+      cros_registration_enabled->set_chrome_os_registration_enabled(
+          cros_registration_enabled_value);
+    } else {
+      NOTREACHED();
+    }
   } else {
     // The remaining settings don't support Set(), since they are not
     // intended to be customizable by the user: