Revert of LayoutDescriptor should inherit from JSTypedArray

src/objects-printer.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/heap/objects-visiting.h"
 #include "src/jsregexp.h"
@@ skipping 1047 matching lines @@
   os << "Layout descriptor: ";
   if (IsUninitialized()) {
     os << "<uninitialized>";
   } else if (IsFastPointerLayout()) {
     os << "<all tagged>";
   } else if (IsSmi()) {
     os << "fast";
     PrintBitMask(os, static_cast<uint32_t>(Smi::cast(this)->value()));
   } else {
     os << "slow";
-    int len = Smi::cast(length())->value();
+    int len = length();
     for (int i = 0; i < len; i++) {
       if (i > 0) os << " |";
       PrintBitMask(os, get_scalar(i));
     }
   }
   os << "\n";
 }
 
 
 #endif  // OBJECT_PRINT
@@ skipping 122 matching lines @@
     os << " -> " << Brief(target) << "\n";
   }
 }
 
 
 void JSObject::PrintTransitions(std::ostream& os) {  // NOLINT
   TransitionArray::PrintTransitions(os, map()->raw_transitions());
 }
 #endif  // defined(DEBUG) || defined(OBJECT_PRINT)
 } }  // namespace v8::internal