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..66652353cc5581327f3a4be22e2f03b36bd33190 100644
--- a/services/authentication/src/org/chromium/mojo/authentication/AuthenticationServiceImpl.java
+++ b/services/authentication/src/org/chromium/mojo/authentication/AuthenticationServiceImpl.java
@@ -244,6 +244,25 @@ public class AuthenticationServiceImpl
         }
     }
 
+    /**
+     * @see AuthenticationService#getOAuth2DeviceCode()
+     */
+    @Override
+    public void getOAuth2DeviceCode(
+            final String[] scopes, final GetOAuth2DeviceCodeResponse callback) {
+        callback.call(null, null, null, "Unsupported operation.");

[qsr, 2015/12/21 14:22:42]

It seems that this CL introduce a parallel flow.

How are user of this API supposed to know which calls to make to obtain a token?

[ukode, 2016/01/06 23:52:59]

GetOAuth2DeviceCode and AddAccount are the account manager apis for
bootstrapping an account on the device and persists a refresh token for each
account on the device. With Android these are already taken care by the Android
Account Manager built in framework. These are used only on devices that don't
have this capability such as Linux/IOS or FNL platforms. Once the account is
added, tokens are still retrieved using the same GetOAuth2Token api that
converts the underlying refresh tokens to access tokens and returned back to the
calling app.

+        return;
+    }
+
+    /**
+     * @see AuthenticationService#addAccount()
+     */
+    @Override
+    public void addAccount(final String deviceCode, final AddAccountResponse callback) {
+        callback.call(null, "Unsupported operation.");
+        return;
+    }
+
     private static boolean isGooglePlayServicesAvailable(Context context) {
         switch (GooglePlayServicesUtil.isGooglePlayServicesAvailable(context)) {
             case ConnectionResult.SERVICE_MISSING: