Add tokeninfo call with token identified by token_handle parameter.

google_apis/gaia/gaia_oauth_client.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GOOGLE_APIS_GAIA_GAIA_OAUTH_CLIENT_H_
 #define GOOGLE_APIS_GAIA_GAIA_OAUTH_CLIENT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 110 matching lines @@
   // provided access token may have any scope, and basic results will be
   // returned: issued_to, audience, scope, expires_in, access_type. In
   // addition, if the https://www.googleapis.com/auth/userinfo.email scope is
   // present, the email and verified_email fields will be returned. If the
   // https://www.googleapis.com/auth/userinfo.profile scope is present, the
   // user_id field will be returned. See |max_retries| docs above.
   void GetTokenInfo(const std::string& oauth_access_token,
                     int max_retries,
                     Delegate* delegate);
 
+  // Call the tokeninfo API for given |token_handle|, returning a dictionary of
+  // response values. Basic results will be returned via
+  // |OnGetTokenInfoResponse| call: audience, expires_in, user_id. See
+  // |max_retries| docs above.
+  void GetTokenHandleInfo(const std::string& token_handle,
+                          int max_retries,
+                          Delegate* delegate);
+
  private:
   // The guts of the implementation live in this class.
   class Core;
   scoped_refptr<Core> core_;
   DISALLOW_COPY_AND_ASSIGN(GaiaOAuthClient);
 };
 }
 
 #endif  // GOOGLE_APIS_GAIA_GAIA_OAUTH_CLIENT_H_