Google OAuth Device Flow support for FNL

services/authentication/src/org/chromium/mojo/authentication/AuthenticationServiceImpl.java

Index: services/authentication/src/org/chromium/mojo/authentication/AuthenticationServiceImpl.java
diff --git a/services/authentication/src/org/chromium/mojo/authentication/AuthenticationServiceImpl.java b/services/authentication/src/org/chromium/mojo/authentication/AuthenticationServiceImpl.java
index e773498c7fdb0e3d764df2f6ae8c84c1cc4e0868..6622c3b84112a23f9a67c18fa71b5b2e9e7bc45e 100644
--- a/services/authentication/src/org/chromium/mojo/authentication/AuthenticationServiceImpl.java
+++ b/services/authentication/src/org/chromium/mojo/authentication/AuthenticationServiceImpl.java
@@ -244,6 +244,23 @@ public class AuthenticationServiceImpl
         }
     }
 
+    /**
+     * @see AuthenticationService#getOAuth2DeviceCode()
+     */
+    @Override
+    public void getOAuth2DeviceCode(
+            final String[] scopes, final GetOAuth2DeviceCodeResponse callback) {
+        callback.call(null, null, null, "Unsupported operation.");
+    }
+
+    /**
+     * @see AuthenticationService#addAccount()
+     */
+    @Override
+    public void addAccount(final String deviceCode, final AddAccountResponse callback) {
+        callback.call(null, "Unsupported operation.");
+    }
+
     private static boolean isGooglePlayServicesAvailable(Context context) {
         switch (GooglePlayServicesUtil.isGooglePlayServicesAvailable(context)) {
             case ConnectionResult.SERVICE_MISSING: