Create a internal, global native context used only for generated code stubs

src/snapshot/natives.h

Index: src/snapshot/natives.h
diff --git a/src/snapshot/natives.h b/src/snapshot/natives.h
index 149f9ec2bed27de84b39e8093701138b941ad1e9..08bc40cf86464a0d51c3cafc31dcac299b5981bc 100644
--- a/src/snapshot/natives.h
+++ b/src/snapshot/natives.h
@@ -12,7 +12,7 @@ namespace v8 { class StartupData; }  // Forward declaration.
 namespace v8 {
 namespace internal {
 
-enum NativeType { CORE, EXPERIMENTAL, EXTRAS, D8, TEST };
+enum NativeType { CORE, CODE_STUB, EXPERIMENTAL, EXTRAS, D8, TEST };
 
 template <NativeType type>
 class NativesCollection {
@@ -33,6 +33,7 @@ class NativesCollection {
 };
 
 typedef NativesCollection<CORE> Natives;
+typedef NativesCollection<CODE_STUB> CodeStubNatives;
 typedef NativesCollection<EXPERIMENTAL> ExperimentalNatives;
 typedef NativesCollection<EXTRAS> ExtraNatives;