Fix sky to pass 'gn check'

mojo/public/tools/bindings/mojom.gni

Index: mojo/public/tools/bindings/mojom.gni
diff --git a/mojo/public/tools/bindings/mojom.gni b/mojo/public/tools/bindings/mojom.gni
index e54ab0fbc1d8132a77ebf053b1f0407c5ba39e8b..8cf23e1c04a82ccaa1f63e87ca1f969c7894de01 100644
--- a/mojo/public/tools/bindings/mojom.gni
+++ b/mojo/public/tools/bindings/mojom.gni
@@ -136,14 +136,16 @@ template("mojom") {
     sources = process_file_template(invoker.sources, generator_cpp_outputs)
     data = process_file_template(invoker.sources, generator_js_outputs)
     deps = [
-      ":$generator_target_name",
       "//mojo/public/cpp/bindings",
     ]
     if (defined(invoker.deps)) {
       deps += invoker.deps
     }
+    public_deps = [
+      ":$generator_target_name",
+    ]
     if (defined(invoker.public_deps)) {
-      public_deps = invoker.public_deps
+      public_deps += invoker.public_deps
     }
   }