Fetch OAuth2 tokens prior to profile creation.

chromeos/login/auth/user_context.h

Index: chromeos/login/auth/user_context.h
diff --git a/chromeos/login/auth/user_context.h b/chromeos/login/auth/user_context.h
index bac7f4f5d4ea1a908ddd53db2cc1077b14f953a3..6b3470bc65a6312cb3f2053770c964f32fdbcb43 100644
--- a/chromeos/login/auth/user_context.h
+++ b/chromeos/login/auth/user_context.h
@@ -48,6 +48,7 @@ class CHROMEOS_EXPORT UserContext {
   Key* GetKey();
   const std::string& GetAuthCode() const;
   const std::string& GetRefreshToken() const;
+  const std::string& GetAccessToken() const;
   const std::string& GetUserIDHash() const;
   bool IsUsingOAuth() const;
   AuthFlow GetAuthFlow() const;
@@ -63,6 +64,7 @@ class CHROMEOS_EXPORT UserContext {
   void SetKey(const Key& key);
   void SetAuthCode(const std::string& auth_code);
   void SetRefreshToken(const std::string& refresh_token);
+  void SetAccessToken(const std::string& access_token);
   void SetUserIDHash(const std::string& user_id_hash);
   void SetIsUsingOAuth(bool is_using_oauth);
   void SetAuthFlow(AuthFlow auth_flow);
@@ -79,6 +81,7 @@ class CHROMEOS_EXPORT UserContext {
   Key key_;
   std::string auth_code_;
   std::string refresh_token_;
+  std::string access_token_;

[xiyuan, 2015/04/23 16:09:23]

nit: // OAuthLogin scoped access token.

   std::string user_id_hash_;
   bool is_using_oauth_;
   AuthFlow auth_flow_;