Introduce LiteralsArray to hide it's implementation.

src/factory.cc

 // Copyright 2014 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/factory.h"
 
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/conversions.h"
@@ skipping 1324 matching lines @@
     DCHECK(!cached.code->marked_for_deoptimization());
     DCHECK(result->shared()->is_compiled());
     result->ReplaceCode(cached.code);
   }
 
   if (cached.literals != nullptr) {
     result->set_literals(cached.literals);
 
   } else if (!info->bound()) {
     int number_of_literals = info->num_literals();
-    Handle<FixedArray> literals = NewFixedArray(number_of_literals, pretenure);
+    Handle<LiteralsArray> literals =
+        LiteralsArray::New(isolate(), handle(info->feedback_vector()),
+                           number_of_literals, pretenure);
     result->set_literals(*literals);
     // Cache context-specific literals.
     if (FLAG_cache_optimized_code) {
       Handle<Context> native_context(context->native_context());
       SharedFunctionInfo::AddToOptimizedCodeMap(
           info, native_context, undefined_value(), literals, BailoutId::None());
     }
   }
 
   return result;
@@ skipping 1036 matching lines @@
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 
 }  // namespace internal
 }  // namespace v8