[WIP] Mojo native bindings interface.

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 3900e50d3fd12119d795b785335b4a8b9766d17c..6450954614e8fadd6068a5d47194d070054f759d 100644
--- a/mojo/public/tools/bindings/generators/mojom_js_generator.py
+++ b/mojo/public/tools/bindings/generators/mojom_js_generator.py
@@ -275,11 +275,11 @@ def JavaScriptProxyMethodParameterValue(parameter):
   name = parameter.name;
   if (mojom.IsInterfaceKind(parameter.kind)):
    type = JavaScriptType(parameter.kind)
-   return "core.isHandle(%s) ? %s : connection.bindImpl" \
+   return "%s instanceof MojoHandle ? %s : connection.bindImpl" \
        "(%s, %s)" % (name, name, name, type)
   if (mojom.IsInterfaceRequestKind(parameter.kind)):
    type = JavaScriptType(parameter.kind.kind)
-   return "core.isHandle(%s) ? %s : connection.bindProxy" \
+   return "%s instanceof MojoHandle ? %s : connection.bindProxy" \
        "(%s, %s)" % (name, name, name, type)
   return name;