[mojo] Add mojom parser support for native-only structs

mojo/public/tools/bindings/generators/mojom_js_generator.py

Index: mojo/public/tools/bindings/generators/mojom_js_generator.py
diff --git a/mojo/public/tools/bindings/generators/mojom_js_generator.py b/mojo/public/tools/bindings/generators/mojom_js_generator.py
index 23c203a52e0231d003987f1b4efd201cd503c74a..e17837ed5672aeba7e743eddb2b7d29758b2c772 100644
--- a/mojo/public/tools/bindings/generators/mojom_js_generator.py
+++ b/mojo/public/tools/bindings/generators/mojom_js_generator.py
@@ -374,7 +374,7 @@ class Generator(generator.Generator):
       "kinds": self.module.kinds,
       "enums": self.module.enums,
       "module": self.module,
-      "structs": self.GetStructs() + self.GetStructsFromMethods(),
+      "structs": self.GetAllStructs(),
       "unions": self.GetUnions(),
       "interfaces": self.GetInterfaces(),
       "imported_interfaces": self.GetImportedInterfaces(),
@@ -406,6 +406,10 @@ class Generator(generator.Generator):
       counter += 1
     return self.module.imports
 
+  def GetAllStructs(self):
+    return filter(lambda struct: not struct.native_only,
+                  self.GetStructs() + self.GetStructsFromMethods())
+
   def GetImportedInterfaces(self):
     interface_to_import = {};
     for each_import in self.module.imports: