Handle redirects in AuthenticatingURLLoaderImpl.

services/authenticating_url_loader/authenticating_url_loader_impl.h

Index: services/authenticating_url_loader/authenticating_url_loader_impl.h
diff --git a/services/authenticating_url_loader/authenticating_url_loader_impl.h b/services/authenticating_url_loader/authenticating_url_loader_impl.h
index e1e9d030b1355addaa66e3a8812e1458ed80cc12..a3ef28f4a90ab4d0ebb148bbeb798bf05b82ca0b 100644
--- a/services/authenticating_url_loader/authenticating_url_loader_impl.h
+++ b/services/authenticating_url_loader/authenticating_url_loader_impl.h
@@ -39,6 +39,7 @@ class AuthenticatingURLLoaderImpl : public AuthenticatingURLLoader,
   // AuthenticatingURLLoader methods:
   void Start(URLRequestPtr request,
              const Callback<void(URLResponsePtr)>& callback) override;
+  void FollowRedirect(const Callback<void(URLResponsePtr)>& callback) override;
 
   // ErrorHandler methods:
   void OnConnectionError() override;
@@ -47,6 +48,8 @@ class AuthenticatingURLLoaderImpl : public AuthenticatingURLLoader,
 
   void OnLoadComplete(URLResponsePtr response);
 
+  void FollowRedirectInternal();
+
   void OnAccountSelected(String username, String error);
 
   void OnOAuth2TokenReceived(String token, String error);
@@ -64,7 +67,7 @@ class AuthenticatingURLLoaderImpl : public AuthenticatingURLLoader,
   Array<String> headers_;
   String username_;
   String token_;
-  Callback<void(URLResponsePtr)> pending_start_callback_;
+  Callback<void(URLResponsePtr)> pending_request_callback_;
 };
 
 }  // namespace mojo