Mojom lexer.

R=viettrungluu@chromium.org

Review URL: https://codereview.chromium.org/1034083003
diff --git a/BUILD.gn b/BUILD.gn
index 52b2cfe..6c4c71c 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -10,6 +10,7 @@
     "//crypto:crypto_unittests",
     "//examples",
     "//mojo",
+    "//mojom",
     "//services",
     "//shell",
     "//ui/gfx:gfx_unittests",