Tag all prototypes as proto, except those set using __proto__

src/generator.js

Index: src/generator.js
diff --git a/src/generator.js b/src/generator.js
index 54f6d8cd7e6a7d5e435b8a5f8be6a1b0a8008734..c62fe2c771389db255528087262c9ead49d55b39 100644
--- a/src/generator.js
+++ b/src/generator.js
@@ -67,11 +67,11 @@ function SetUpGenerators() {
       GeneratorObjectIterator, DONT_ENUM | DONT_DELETE | READ_ONLY);
   %AddNamedProperty(GeneratorObjectPrototype, "constructor",
       GeneratorFunctionPrototype, DONT_ENUM | DONT_DELETE | READ_ONLY);
-  %SetPrototype(GeneratorFunctionPrototype, $Function.prototype);
+  %InternalSetPrototype(GeneratorFunctionPrototype, $Function.prototype);
   %SetCode(GeneratorFunctionPrototype, GeneratorFunctionPrototypeConstructor);
   %AddNamedProperty(GeneratorFunctionPrototype, "constructor",
       GeneratorFunction, DONT_ENUM | DONT_DELETE | READ_ONLY);
-  %SetPrototype(GeneratorFunction, $Function);
+  %InternalSetPrototype(GeneratorFunction, $Function);
   %SetCode(GeneratorFunction, GeneratorFunctionConstructor);
 }