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..8f7cae92b5bdda2a152500340bbc72b8013e75ca 100644
--- a/src/ia32/macro-assembler-ia32.h
+++ b/src/ia32/macro-assembler-ia32.h
@@ -357,17 +357,15 @@ class MacroAssembler: public Assembler {
                       InvokeFlag flag,
                       const CallWrapper& call_wrapper);
 
-  // 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,
+  // Invoke specified builtin JavaScript function.
+  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