Whitespace change

Cr-Commit-Position: refs/heads/master@{#321292}
diff --git a/BUILD.gn b/BUILD.gn
index 9c935c6..e701090 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1,4 +1,3 @@
-
 group("default") {
   testonly = true
   deps = [