Use PhutilXHPASTBinary methods

Summary: Use `PhutilXHPASTBinary` methods instead of `xhpast_parse` functions. Depends on D11517.

Test Plan: N/A, this is a direct swap.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11612

src/applications/phpast/controller/PhabricatorXHPASTViewRunController.php

@@ -11,7 +11,7 @@ final class PhabricatorXHPASTViewRunController
     if ($request->isFormPost()) {
       $source = $request->getStr('source');
 
-      $future = xhpast_get_parser_future($source);
+      $future = PhutilXHPASTBinary::getParserFuture($source);
       $resolved = $future->resolve();
 
       // This is just to let it throw exceptions if stuff is broken.