Add vogelheim to src/parsing/OWNERS

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/2057593002 .

Cr-Commit-Position: refs/heads/master@{#36867}

src/parsing/OWNERS

@@ -4,4 +4,4 @@ adamk@chromium.org
 littledan@chromium.org
 marja@chromium.org
 rossberg@chromium.org
-
+vogelheim@chromium.org