Revert changes 601 and 602. TBR

src/objects-inl.h

Index: src/objects-inl.h
===================================================================
--- src/objects-inl.h	(revision 602)
+++ src/objects-inl.h	(working copy)
@@ -552,8 +552,8 @@
   (*reinterpret_cast<byte*>(FIELD_ADDR(p, offset)) = value)
 
 
-Object*& HeapObject::RawField(HeapObject* obj, int byte_offset) {
-  return READ_FIELD(obj, byte_offset);
+Object* HeapObject::GetHeapObjectField(HeapObject* obj, int index) {
+  return READ_FIELD(obj, HeapObject::kHeaderSize + kPointerSize * index);
 }