Introduce accessors on builtins instance

src/ia32/macro-assembler-ia32.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1468 matching lines @@
       // is the case when we invoke functions using call and apply.
       cmp(expected.reg(), Operand(actual.reg()));
       j(equal, &invoke);
       ASSERT(actual.reg().is(eax));
       ASSERT(expected.reg().is(ebx));
     }
   }
 
   if (!definitely_matches) {
     Handle<Code> adaptor =
-        Handle<Code>(Isolate::Current()->builtins()->builtin(
-            Builtins::ArgumentsAdaptorTrampoline));
+        isolate()->builtins()->ArgumentsAdaptorTrampoline();
     if (!code_constant.is_null()) {
       mov(edx, Immediate(code_constant));
       add(Operand(edx), Immediate(Code::kHeaderSize - kHeapObjectTag));
     } else if (!code_operand.is_reg(edx)) {
       mov(edx, code_operand);
     }
 
     if (flag == CALL_FUNCTION) {
       call(adaptor, RelocInfo::CODE_TARGET);
       if (post_call_generator != NULL) post_call_generator->Generate();
@@ skipping 549 matching lines @@
 
   // Check that the code was patched as expected.
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32