Introduce {FAST,SLOW}_STRING_WRAPPER_ELEMENTS

src/interpreter/bytecode-array-iterator.cc

 // Copyright 2015 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/interpreter/bytecode-array-iterator.h"
 
 #include "src/objects-inl.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 115 matching lines @@
           return GetCountOperand(operand_index + 1);
         }
       }
       return 1;
     }
   }
 }
 
 Handle<Object> BytecodeArrayIterator::GetConstantForIndexOperand(
     int operand_index) const {
-  Handle<FixedArray> constants = handle(bytecode_array()->constant_pool());
-  return FixedArray::get(constants, GetIndexOperand(operand_index));
+  return FixedArray::get(bytecode_array()->constant_pool(),
+                         GetIndexOperand(operand_index),
+                         bytecode_array()->GetIsolate());
 }
 
 
 int BytecodeArrayIterator::GetJumpTargetOffset() const {
   Bytecode bytecode = current_bytecode();
   if (interpreter::Bytecodes::IsJumpImmediate(bytecode)) {
     int relative_offset = GetImmediateOperand(0);
     return current_offset() + relative_offset;
   } else if (interpreter::Bytecodes::IsJumpConstant(bytecode) ||
              interpreter::Bytecodes::IsJumpConstantWide(bytecode)) {
     Smi* smi = Smi::cast(*GetConstantForIndexOperand(0));
     return current_offset() + smi->value();
   } else {
     UNREACHABLE();
     return kMinInt;
   }
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8