Run gn format on all BUILD.gn files (gn version 306668)

examples/apptest/BUILD.gn

Index: examples/apptest/BUILD.gn
diff --git a/examples/apptest/BUILD.gn b/examples/apptest/BUILD.gn
index 7c109c8f50a2f680e93e00f8886bc86838811dd0..b93024d7996a93ace469443a7e1213ed2d2bafbf 100644
--- a/examples/apptest/BUILD.gn
+++ b/examples/apptest/BUILD.gn
@@ -44,18 +44,22 @@ mojo_native_application("apptests") {
     "example_client_impl.h",
   ]
 
-   deps = [
+  deps = [
     ":bindings",
     "//mojo/public/cpp/application:standalone",
     "//mojo/public/cpp/application:test_support_standalone",
     "//mojo/public/cpp/bindings:callback",
     "//mojo/public/cpp/environment",
     "//mojo/public/cpp/system",
-   ]
+  ]
 
-   datadeps = [ ":service", ]
+  datadeps = [
+    ":service",
+  ]
 }
 
 mojom("bindings") {
-  sources = [ "example_service.mojom" ]
+  sources = [
+    "example_service.mojom",
+  ]
 }