Move (uppercase) JS builtins from js builtins object to native context.

src/ia32/macro-assembler-ia32.h

Index: src/ia32/macro-assembler-ia32.h
diff --git a/src/ia32/macro-assembler-ia32.h b/src/ia32/macro-assembler-ia32.h
index bf3715a38ffa84af2395d951ebabf44c1d02d027..910521c799c4cc51968619588a602cfa13ff26c5 100644
--- a/src/ia32/macro-assembler-ia32.h
+++ b/src/ia32/macro-assembler-ia32.h
@@ -359,15 +359,14 @@ class MacroAssembler: public Assembler {
 
   // Invoke specified builtin JavaScript function. Adds an entry to
   // the unresolved list if the name does not resolve.
-  void InvokeBuiltin(Builtins::JavaScript id,
-                     InvokeFlag flag,
+  void InvokeBuiltin(int native_context_index, InvokeFlag flag,
                      const CallWrapper& call_wrapper = NullCallWrapper());
 
   // Store the function for the given builtin in the target register.
-  void GetBuiltinFunction(Register target, Builtins::JavaScript id);
+  void GetBuiltinFunction(Register target, int native_context_index);
 
   // Store the code object for the given builtin in the target register.
-  void GetBuiltinEntry(Register target, Builtins::JavaScript id);
+  void GetBuiltinEntry(Register target, int native_context_index);
 
   // Expression support
   // cvtsi2sd instruction only writes to the low 64-bit of dst register, which